12219908712 has 32 divisors (see below), whose sum is σ = 33327024480. Its totient is φ = 3703002560.

The previous prime is 12219908663. The next prime is 12219908713. The reversal of 12219908712 is 21780991221.

It is a super-2 number, since 2×12219908712² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12219908713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23143503 + ... + 23144030.

It is an arithmetic number, because the mean of its divisors is an integer number (1041469515).

Almost surely, 2^12219908712 is an apocalyptic number.

12219908712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12219908712 is an abundant number, since it is smaller than the sum of its proper divisors (21107115768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12219908712 is a wasteful number, since it uses less digits than its factorization.

12219908712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46287553 (or 46287549 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 12219908712 in words is "twelve billion, two hundred nineteen million, nine hundred eight thousand, seven hundred twelve".