111012120131 has 8 divisors (see below), whose sum is σ = 121106835504. Its totient is φ = 100917855520.

The previous prime is 111012120103. The next prime is 111012120139. The reversal of 111012120131 is 131021210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012120131 is a prime.

It is a super-2 number, since 2×111012120131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111012120139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596141 + ... + 759873.

It is an arithmetic number, because the mean of its divisors is an integer number (15138354438).

Almost surely, 2^111012120131 is an apocalyptic number.

111012120131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111012120131 is a deficient number, since it is larger than the sum of its proper divisors (10094715373).

111012120131 is a wasteful number, since it uses less digits than its factorization.

111012120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225381.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111012120131 its reverse (131021210111), we get a palindrome (242033330242).

The spelling of 111012120131 in words is "one hundred eleven billion, twelve million, one hundred twenty thousand, one hundred thirty-one".