201122111022012 has 36 divisors (see below), whose sum is σ = 508454853393760. Its totient is φ = 67032415691712.

The previous prime is 201122111021981. The next prime is 201122111022017. The reversal of 201122111022012 is 210220111221102.

201122111022012 is a `hidden beast` number, since 201 + 1 + 221 + 1 + 10 + 220 + 12 = 666.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122111022017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345037348 + ... + 345619755.

Almost surely, 2^{201122111022012} is an apocalyptic number.

It is an amenable number.

201122111022012 is an abundant number, since it is smaller than the sum of its proper divisors (307332742371748).

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

201122111022012 is a wasteful number, since it uses less digits than its factorization.

201122111022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690665202 (or 690665197 counting only the distinct ones).

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

Adding to 201122111022012 its reverse (210220111221102), we get a palindrome (411342222243114).

The spelling of 201122111022012 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, twelve".