12121200999936 has 160 divisors (see below), whose sum is σ = 41005253710080. Its totient is φ = 3463200258048.

The previous prime is 12121200999881. The next prime is 12121200999937. The reversal of 12121200999936 is 63999900212121.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121200999937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62533446 + ... + 62726981.

It is an arithmetic number, because the mean of its divisors is an integer number (256282835688).

Almost surely, 2^{12121200999936} is an apocalyptic number.

12121200999936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12121200999936 is an abundant number, since it is smaller than the sum of its proper divisors (28884052710144).

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

12121200999936 is an equidigital number, since it uses as much as digits as its factorization.

12121200999936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125260461 (or 125260439 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The spelling of 12121200999936 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred thirty-six".