312212212210100 has 72 divisors (see below), whose sum is σ = 680113372770720. Its totient is φ = 124403533591680.

The previous prime is 312212212210091. The next prime is 312212212210147. The reversal of 312212212210100 is 1012212212213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 86210459 + ... + 89758941.

It is an arithmetic number, because the mean of its divisors is an integer number (9446019066260).

Almost surely, 2^{312212212210100} is an apocalyptic number.

It is an amenable number.

312212212210100 is an abundant number, since it is smaller than the sum of its proper divisors (367901160560620).

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

312212212210100 is a wasteful number, since it uses less digits than its factorization.

312212212210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551889 (or 3551882 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 312212212210100 its reverse (1012212212213), we get a palindrome (313224424422313).

The spelling of 312212212210100 in words is "three hundred twelve trillion, two hundred twelve billion, two hundred twelve million, two hundred ten thousand, one hundred".