111012131001 has 16 divisors (see below), whose sum is σ = 156769254144. Its totient is φ = 69634116864.

The previous prime is 111012130997. The next prime is 111012131053. The reversal of 111012131001 is 100131210111.

It is not a de Polignac number, because 111012131001 - 2² = 111012130997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111012131101) 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, 145690 + ... + 493203.

It is an arithmetic number, because the mean of its divisors is an integer number (9798078384).

Almost surely, 2^111012131001 is an apocalyptic number.

It is an amenable number.

111012131001 is a deficient number, since it is larger than the sum of its proper divisors (45757123143).

111012131001 is a wasteful number, since it uses less digits than its factorization.

111012131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642320.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 111012131001 its reverse (100131210111), we get a palindrome (211143341112).

The spelling of 111012131001 in words is "one hundred eleven billion, twelve million, one hundred thirty-one thousand, one".