220001212210212 has 36 divisors (see below), whose sum is σ = 556150285676076. Its totient is φ = 73328975596800.

The previous prime is 220001212210133. The next prime is 220001212210243. The reversal of 220001212210212 is 212012212100022.

It is a happy number.

220001212210212 is a `hidden beast` number, since 220 + 0 + 0 + 1 + 21 + 2 + 210 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 168119645481216 + 51881566728996 = 12966096^2 + 7202886^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197846473 + ... + 198955344.

Almost surely, 2^{220001212210212} is an apocalyptic number.

It is an amenable number.

220001212210212 is an abundant number, since it is smaller than the sum of its proper divisors (336149073465864).

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

220001212210212 is a wasteful number, since it uses less digits than its factorization.

220001212210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396817228 (or 396817223 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220001212210212 its reverse (212012212100022), we get a palindrome (432013424310234).

The spelling of 220001212210212 in words is "two hundred twenty trillion, one billion, two hundred twelve million, two hundred ten thousand, two hundred twelve".