11122431213 has 16 divisors (see below), whose sum is σ = 15584926016. Its totient is φ = 7046766720.

The previous prime is 11122431209. The next prime is 11122431259. The reversal of 11122431213 is 31213422111.

It is not a de Polignac number, because 11122431213 - 2² = 11122431209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122431213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122431263) 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, 1160368 + ... + 1169913.

It is an arithmetic number, because the mean of its divisors is an integer number (974057876).

Almost surely, 2^11122431213 is an apocalyptic number.

It is an amenable number.

11122431213 is a deficient number, since it is larger than the sum of its proper divisors (4462494803).

11122431213 is a wasteful number, since it uses less digits than its factorization.

11122431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330364.

The product of its digits is 288, while the sum is 21.

Adding to 11122431213 its reverse (31213422111), we get a palindrome (42335853324).

The spelling of 11122431213 in words is "eleven billion, one hundred twenty-two million, four hundred thirty-one thousand, two hundred thirteen".