111012109213 has 2 divisors, whose sum is σ = 111012109214. Its totient is φ = 111012109212.

The previous prime is 111012109177. The next prime is 111012109253. The reversal of 111012109213 is 312901210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98468557209 + 12543552004 = 313797^2 + 111998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012109213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012109253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506054606 + 55506054607.

It is an arithmetic number, because the mean of its divisors is an integer number (55506054607).

Almost surely, 2^111012109213 is an apocalyptic number.

It is an amenable number.

111012109213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012109213 is an equidigital number, since it uses as much as digits as its factorization.

111012109213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 111012109213 its reverse (312901210111), we get a palindrome (423913319324).

The spelling of 111012109213 in words is "one hundred eleven billion, twelve million, one hundred nine thousand, two hundred thirteen".