201331222122 has 32 divisors (see below), whose sum is σ = 428557571712. Its totient is φ = 62835462144.

The previous prime is 201331222093. The next prime is 201331222129. The reversal of 201331222122 is 221222133102.

It is a super-2 number, since 2×201331222122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201331222129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5093878 + ... + 5133249.

It is an arithmetic number, because the mean of its divisors is an integer number (13392424116).

Almost surely, 2^201331222122 is an apocalyptic number.

201331222122 is an abundant number, since it is smaller than the sum of its proper divisors (227226349590).

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

201331222122 is a wasteful number, since it uses less digits than its factorization.

201331222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10227342.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201331222122 its reverse (221222133102), we get a palindrome (422553355224).

The spelling of 201331222122 in words is "two hundred one billion, three hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-two".