1212021000112 has 20 divisors (see below), whose sum is σ = 2528928433360. Its totient is φ = 559394307648.

The previous prime is 1212021000109. The next prime is 1212021000131. The reversal of 1212021000112 is 2110001202121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1212021000092 and 1212021000101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913511812 + ... + 2913512227.

It is an arithmetic number, because the mean of its divisors is an integer number (126446421668).

Almost surely, 2^{1212021000112} is an apocalyptic number.

It is an amenable number.

1212021000112 is an abundant number, since it is smaller than the sum of its proper divisors (1316907433248).

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

1212021000112 is a wasteful number, since it uses less digits than its factorization.

1212021000112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5827024060 (or 5827024054 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212021000112 its reverse (2110001202121), we get a palindrome (3322022202233).

The spelling of 1212021000112 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twelve", and thus it is an aban number.