312012201021100 has 36 divisors (see below), whose sum is σ = 688165926659008. Its totient is φ = 122758898760000.

The previous prime is 312012201021097. The next prime is 312012201021113. The reversal of 312012201021100 is 1120102210213.

It is a super-2 number, since 2×312012201021100² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25574764476 + ... + 25574776675.

Almost surely, 2^{312012201021100} is an apocalyptic number.

It is an amenable number.

312012201021100 is an abundant number, since it is smaller than the sum of its proper divisors (376153725637908).

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

312012201021100 is a wasteful number, since it uses less digits than its factorization.

312012201021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51149541226 (or 51149541219 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 312012201021100 its reverse (1120102210213), we get a palindrome (313132303231313).

The spelling of 312012201021100 in words is "three hundred twelve trillion, twelve billion, two hundred one million, twenty-one thousand, one hundred".