312121232022 has 16 divisors (see below), whose sum is σ = 624546552240. Its totient is φ = 103989729312.

The previous prime is 312121232011. The next prime is 312121232047. The reversal of 312121232022 is 220232121213.

It is a self number, because there is not a number n which added to its sum of digits gives 312121232022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12656997 + ... + 12681632.

It is an arithmetic number, because the mean of its divisors is an integer number (39034159515).

Almost surely, 2^312121232022 is an apocalyptic number.

312121232022 is an abundant number, since it is smaller than the sum of its proper divisors (312425320218).

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

312121232022 is a wasteful number, since it uses less digits than its factorization.

312121232022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25340687.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312121232022 its reverse (220232121213), we get a palindrome (532353353235).

The spelling of 312121232022 in words is "three hundred twelve billion, one hundred twenty-one million, two hundred thirty-two thousand, twenty-two".