201220111012212 has 96 divisors (see below), whose sum is σ = 522126718400000. Its totient is φ = 67016168294400.

The previous prime is 201220111012189. The next prime is 201220111012231. The reversal of 201220111012212 is 212210111022102.

201220111012212 is a `hidden beast` number, since 201 + 220 + 1 + 110 + 122 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4568904912 + ... + 4568948952.

Almost surely, 2^{201220111012212} is an apocalyptic number.

It is an amenable number.

201220111012212 is an abundant number, since it is smaller than the sum of its proper divisors (320906607387788).

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

201220111012212 is a wasteful number, since it uses less digits than its factorization.

201220111012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79174 (or 79166 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201220111012212 its reverse (212210111022102), we get a palindrome (413430222034314).

The spelling of 201220111012212 in words is "two hundred one trillion, two hundred twenty billion, one hundred eleven million, twelve thousand, two hundred twelve".