12129213288 has 32 divisors (see below), whose sum is σ = 30352449600. Its totient is φ = 4039148928.

The previous prime is 12129213281. The next prime is 12129213301. The reversal of 12129213288 is 88231292121.

It is not an unprimeable number, because it can be changed into a prime (12129213281) 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, 219828 + ... + 269411.

It is an arithmetic number, because the mean of its divisors is an integer number (948514050).

Almost surely, 2^12129213288 is an apocalyptic number.

It is an amenable number.

12129213288 is an abundant number, since it is smaller than the sum of its proper divisors (18223236312).

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

12129213288 is a wasteful number, since it uses less digits than its factorization.

12129213288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490281 (or 490277 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The spelling of 12129213288 in words is "twelve billion, one hundred twenty-nine million, two hundred thirteen thousand, two hundred eighty-eight".