312210212022 has 80 divisors (see below), whose sum is σ = 722956050432. Its totient is φ = 100600464240.

The previous prime is 312210212011. The next prime is 312210212023. The reversal of 312210212022 is 220212012213.

312210212022 is a `hidden beast` number, since 312 + 210 + 2 + 120 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 312210211986 and 312210212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312210212023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4520683 + ... + 4589225.

Almost surely, 2^312210212022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312210212022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361478025216).

312210212022 is an abundant number, since it is smaller than the sum of its proper divisors (410745838410).

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

312210212022 is a wasteful number, since it uses less digits than its factorization.

312210212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69495 (or 69486 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 312210212022 its reverse (220212012213), we get a palindrome (532422224235).

The spelling of 312210212022 in words is "three hundred twelve billion, two hundred ten million, two hundred twelve thousand, twenty-two".