312211202022 has 48 divisors (see below), whose sum is σ = 699873024240. Its totient is φ = 100468944576.

The previous prime is 312211202003. The next prime is 312211202053. The reversal of 312211202022 is 220202112213.

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 = 312211201986 and 312211202004.

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, 4594848 + ... + 4662300.

It is an arithmetic number, because the mean of its divisors is an integer number (14580688005).

Almost surely, 2^312211202022 is an apocalyptic number.

312211202022 is an abundant number, since it is smaller than the sum of its proper divisors (387661822218).

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

312211202022 is a wasteful number, since it uses less digits than its factorization.

312211202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76357 (or 76354 counting only the distinct ones).

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

Adding to 312211202022 its reverse (220202112213), we get a palindrome (532413314235).

The spelling of 312211202022 in words is "three hundred twelve billion, two hundred eleven million, two hundred two thousand, twenty-two".