11122112331 has 48 divisors (see below), whose sum is σ = 17665959168. Its totient is φ = 6686971200.

The previous prime is 11122112297. The next prime is 11122112333. The reversal of 11122112331 is 13321122111.

11122112331 is a `hidden beast` number, since 111 + 221 + 1 + 2 + 331 = 666.

It is not a de Polignac number, because 11122112331 - 2¹³ = 11122104139 is a prime.

It is a super-2 number, since 2×11122112331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11122112333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9497376 + ... + 9498546.

It is an arithmetic number, because the mean of its divisors is an integer number (368040816).

Almost surely, 2^11122112331 is an apocalyptic number.

11122112331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122112331 is a deficient number, since it is larger than the sum of its proper divisors (6543846837).

11122112331 is a wasteful number, since it uses less digits than its factorization.

11122112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872 (or 1869 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11122112331 its reverse (13321122111), we get a palindrome (24443234442).

The spelling of 11122112331 in words is "eleven billion, one hundred twenty-two million, one hundred twelve thousand, three hundred thirty-one".