312212320222 has 32 divisors (see below), whose sum is σ = 517274488800. Its totient is φ = 140145984000.

The previous prime is 312212320193. The next prime is 312212320241. The reversal of 312212320222 is 222023212213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 312212320193 and 312212320202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485472 + ... + 1682572.

It is an arithmetic number, because the mean of its divisors is an integer number (16164827775).

Almost surely, 2^312212320222 is an apocalyptic number.

312212320222 is a deficient number, since it is larger than the sum of its proper divisors (205062168578).

312212320222 is a wasteful number, since it uses less digits than its factorization.

312212320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198012.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 312212320222 its reverse (222023212213), we get a palindrome (534235532435).

The spelling of 312212320222 in words is "three hundred twelve billion, two hundred twelve million, three hundred twenty thousand, two hundred twenty-two".