12121537760 has 48 divisors (see below), whose sum is σ = 28723775472. Its totient is φ = 4833945600.

The previous prime is 12121537759. The next prime is 12121537777. The reversal of 12121537760 is 6773512121.

It is a self number, because there is not a number n which added to its sum of digits gives 12121537760.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61481 + ... + 167400.

It is an arithmetic number, because the mean of its divisors is an integer number (598411989).

Almost surely, 2^12121537760 is an apocalyptic number.

12121537760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121537760 is an abundant number, since it is smaller than the sum of its proper divisors (16602237712).

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

12121537760 is a wasteful number, since it uses less digits than its factorization.

12121537760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229227 (or 229219 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 12121537760 in words is "twelve billion, one hundred twenty-one million, five hundred thirty-seven thousand, seven hundred sixty".