220001210112212 has 6 divisors (see below), whose sum is σ = 385002117696378. Its totient is φ = 110000605056104.

The previous prime is 220001210112163. The next prime is 220001210112239. The reversal of 220001210112212 is 212211012100022.

It can be written as a sum of positive squares in only one way, i.e., 123713031588496 + 96288178523716 = 11122636^2 + 9812654^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500151264023 + ... + 27500151264030.

It is an arithmetic number, because the mean of its divisors is an integer number (64167019616063).

Almost surely, 2^{220001210112212} is an apocalyptic number.

It is an amenable number.

220001210112212 is a deficient number, since it is larger than the sum of its proper divisors (165000907584166).

220001210112212 is a wasteful number, since it uses less digits than its factorization.

220001210112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55000302528057 (or 55000302528055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220001210112212 its reverse (212211012100022), we get a palindrome (432212222212234).

The spelling of 220001210112212 in words is "two hundred twenty trillion, one billion, two hundred ten million, one hundred twelve thousand, two hundred twelve".