12155227032 has 64 divisors (see below), whose sum is σ = 33523832160. Its totient is φ = 3648844800.

The previous prime is 12155227027. The next prime is 12155227079. The reversal of 12155227032 is 23072255121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462319 + ... + 487902.

Almost surely, 2^12155227032 is an apocalyptic number.

12155227032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12155227032 is an abundant number, since it is smaller than the sum of its proper divisors (21368605128).

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

12155227032 is a wasteful number, since it uses less digits than its factorization.

12155227032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950284 (or 950280 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 12155227032 in words is "twelve billion, one hundred fifty-five million, two hundred twenty-seven thousand, thirty-two".