12040921280 has 28 divisors (see below), whose sum is σ = 28672444560. Its totient is φ = 4816368384.

The previous prime is 12040921267. The next prime is 12040921297. The reversal of 12040921280 is 8212904021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18813620 + ... + 18814259.

Almost surely, 2^12040921280 is an apocalyptic number.

12040921280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12040921280 is an abundant number, since it is smaller than the sum of its proper divisors (16631523280).

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

12040921280 is an equidigital number, since it uses as much as digits as its factorization.

12040921280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37627896 (or 37627886 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 12040921280 in words is "twelve billion, forty million, nine hundred twenty-one thousand, two hundred eighty".