121312132100010 has 48 divisors (see below), whose sum is σ = 327093452483616. Its totient is φ = 32349901892688.

The previous prime is 121312132100009. The next prime is 121312132100023. The reversal of 121312132100010 is 10001231213121.

121312132100010 is a `hidden beast` number, since 1 + 21 + 312 + 1 + 321 + 0 + 0 + 0 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24961341624 + ... + 24961346483.

It is an arithmetic number, because the mean of its divisors is an integer number (6814446926742).

Almost surely, 2^{121312132100010} is an apocalyptic number.

121312132100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312132100010 is an abundant number, since it is smaller than the sum of its proper divisors (205781320383606).

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

121312132100010 is an equidigital number, since it uses as much as digits as its factorization.

121312132100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49922688129 (or 49922688117 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121312132100010 its reverse (10001231213121), we get a palindrome (131313363313131).

The spelling of 121312132100010 in words is "one hundred twenty-one trillion, three hundred twelve billion, one hundred thirty-two million, one hundred thousand, ten".