212312031021222 has 16 divisors (see below), whose sum is σ = 463226249500992. Its totient is φ = 64336979097320.

The previous prime is 212312031021203. The next prime is 212312031021239. The reversal of 212312031021222 is 222120130213212.

It is a junction number, because it is equal to n+sod(n) for n = 212312031021192 and 212312031021201.

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, 1608424477368 + ... + 1608424477499.

It is an arithmetic number, because the mean of its divisors is an integer number (28951640593812).

Almost surely, 2^{212312031021222} is an apocalyptic number.

212312031021222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212312031021222 is an abundant number, since it is smaller than the sum of its proper divisors (250914218479770).

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

212312031021222 is a wasteful number, since it uses less digits than its factorization.

212312031021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216848954883.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 212312031021222 its reverse (222120130213212), we get a palindrome (434432161234434).

The spelling of 212312031021222 in words is "two hundred twelve trillion, three hundred twelve billion, thirty-one million, twenty-one thousand, two hundred twenty-two".