111440122131 has 16 divisors (see below), whose sum is σ = 160159903904. Its totient is φ = 68517114624.

The previous prime is 111440122127. The next prime is 111440122133. The reversal of 111440122131 is 131221044111.

It is not a de Polignac number, because 111440122131 - 2² = 111440122127 is a prime.

It is a super-2 number, since 2×111440122131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111440122098 and 111440122107.

It is not an unprimeable number, because it can be changed into a prime (111440122133) 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, 1235506 + ... + 1322631.

It is an arithmetic number, because the mean of its divisors is an integer number (10009993994).

Almost surely, 2^111440122131 is an apocalyptic number.

111440122131 is a deficient number, since it is larger than the sum of its proper divisors (48719781773).

111440122131 is a wasteful number, since it uses less digits than its factorization.

111440122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559270.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111440122131 its reverse (131221044111), we get a palindrome (242661166242).

The spelling of 111440122131 in words is "one hundred eleven billion, four hundred forty million, one hundred twenty-two thousand, one hundred thirty-one".