111112210131 has 24 divisors (see below), whose sum is σ = 160646008320. Its totient is φ = 68281420896.

The previous prime is 111112210129. The next prime is 111112210151. The reversal of 111112210131 is 131012211111.

It is not a de Polignac number, because 111112210131 - 2¹ = 111112210129 is a prime.

It is a super-2 number, since 2×111112210131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111112210131.

It is not an unprimeable number, because it can be changed into a prime (111112210151) 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 23 ways as a sum of consecutive naturals, for example, 212130 + ... + 516936.

It is an arithmetic number, because the mean of its divisors is an integer number (6693583680).

Almost surely, 2^111112210131 is an apocalyptic number.

111112210131 is a deficient number, since it is larger than the sum of its proper divisors (49533798189).

111112210131 is a wasteful number, since it uses less digits than its factorization.

111112210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305555 (or 305542 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111112210131 its reverse (131012211111), we get a palindrome (242124421242).

It can be divided in two parts, 1111122 and 10131, that added together give a triangular number (1121253 = T₁₄₉₇).

The spelling of 111112210131 in words is "one hundred eleven billion, one hundred twelve million, two hundred ten thousand, one hundred thirty-one".