1122112111231 has 16 divisors (see below), whose sum is σ = 1193563123200. Its totient is φ = 1052569117600.

The previous prime is 1122112111213. The next prime is 1122112111247. The reversal of 1122112111231 is 1321112112211.

It is a cyclic number.

It is not a de Polignac number, because 1122112111231 - 2³⁷ = 984673157759 is a prime.

It is a super-2 number, since 2×1122112111231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122112111199 and 1122112111208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122112111261) 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, 2339406 + ... + 2777956.

It is an arithmetic number, because the mean of its divisors is an integer number (74597695200).

Almost surely, 2^{1122112111231} is an apocalyptic number.

1122112111231 is a deficient number, since it is larger than the sum of its proper divisors (71451011969).

1122112111231 is a wasteful number, since it uses less digits than its factorization.

1122112111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440726.

The product of its digits is 48, while the sum is 19.

Adding to 1122112111231 its reverse (1321112112211), we get a palindrome (2443224223442).

The spelling of 1122112111231 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred eleven thousand, two hundred thirty-one".