111311322122120 has 32 divisors (see below), whose sum is σ = 251045369052120. Its totient is φ = 44418769866240.

The previous prime is 111311322122009. The next prime is 111311322122129. The reversal of 111311322122120 is 21221223113111.

It can be written as a sum of positive squares in 4 ways, for example, as 56990088475684 + 54321233646436 = 7549178^2 + 7370294^2 .

It is a super-2 number, since 2×111311322122120² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111311322122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304951157 + ... + 3304984836.

Almost surely, 2^{111311322122120} is an apocalyptic number.

111311322122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111311322122120 is an abundant number, since it is smaller than the sum of its proper divisors (139734046930000).

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

111311322122120 is a wasteful number, since it uses less digits than its factorization.

111311322122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609936425 (or 6609936421 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 111311322122120 its reverse (21221223113111), we get a palindrome (132532545235231).

Subtracting from 111311322122120 its reverse (21221223113111), we obtain a palindrome (90090099009009).

The spelling of 111311322122120 in words is "one hundred eleven trillion, three hundred eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty".