111213331213 has 2 divisors, whose sum is σ = 111213331214. Its totient is φ = 111213331212.

The previous prime is 111213331181. The next prime is 111213331223. The reversal of 111213331213 is 312133312111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61974608809 + 49238722404 = 248947^2 + 221898^2 .

It is a cyclic number.

It is not a de Polignac number, because 111213331213 - 2⁵ = 111213331181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111213331223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606665606 + 55606665607.

It is an arithmetic number, because the mean of its divisors is an integer number (55606665607).

Almost surely, 2^111213331213 is an apocalyptic number.

It is an amenable number.

111213331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213331213 is an equidigital number, since it uses as much as digits as its factorization.

111213331213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 22.

Adding to 111213331213 its reverse (312133312111), we get a palindrome (423346643324).

The spelling of 111213331213 in words is "one hundred eleven billion, two hundred thirteen million, three hundred thirty-one thousand, two hundred thirteen".