201111100021122 has 64 divisors (see below), whose sum is σ = 415674535985280. Its totient is φ = 64818394615296.

The previous prime is 201111100021103. The next prime is 201111100021141. The reversal of 201111100021122 is 221120001111102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201111100021103) and next prime (201111100021141).

It is a super-2 number, since 2×201111100021122² (a number of 29 digits) contains 22 as substring.

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, 34797129 + ... + 40162947.

It is an arithmetic number, because the mean of its divisors is an integer number (6494914624770).

Almost surely, 2^{201111100021122} is an apocalyptic number.

201111100021122 is an abundant number, since it is smaller than the sum of its proper divisors (214563435964158).

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

201111100021122 is a wasteful number, since it uses less digits than its factorization.

201111100021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366915.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201111100021122 its reverse (221120001111102), we get a palindrome (422231101132224).

The spelling of 201111100021122 in words is "two hundred one trillion, one hundred eleven billion, one hundred million, twenty-one thousand, one hundred twenty-two".