212112221020122 has 16 divisors (see below), whose sum is σ = 426126793800960. Its totient is φ = 70387015046592.

The previous prime is 212112221020111. The next prime is 212112221020153. The reversal of 212112221020122 is 221020122211212.

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, 79264655247 + ... + 79264657922.

It is an arithmetic number, because the mean of its divisors is an integer number (26632924612560).

Almost surely, 2^{212112221020122} is an apocalyptic number.

212112221020122 is an abundant number, since it is smaller than the sum of its proper divisors (214014572780838).

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

212112221020122 is a wasteful number, since it uses less digits than its factorization.

212112221020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158529313397.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212112221020122 its reverse (221020122211212), we get a palindrome (433132343231334).

The spelling of 212112221020122 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, twenty thousand, one hundred twenty-two".