most of you probably know this but 21 million #bitcoin is only an approximation

the maximum supply is actually 2,310,000 #satoshis less

20,999,999.9769 in total will be mined

20,999,949.9769 will be spendable

2,099,999,997,690,000 #sats

this does not take into account the bitcoins lost (probably millions)

someone verify this