11122312231 has 4 divisors (see below), whose sum is σ = 11154365352. Its totient is φ = 11090259112.

The previous prime is 11122312219. The next prime is 11122312241. The reversal of 11122312231 is 13221322111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11122312231 - 2⁵ = 11122312199 is a prime.

It is a super-2 number, since 2×11122312231² (a number of 21 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 = 11122312199 and 11122312208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122312211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16026040 + ... + 16026733.

It is an arithmetic number, because the mean of its divisors is an integer number (2788591338).

Almost surely, 2^11122312231 is an apocalyptic number.

11122312231 is a deficient number, since it is larger than the sum of its proper divisors (32053121).

11122312231 is an equidigital number, since it uses as much as digits as its factorization.

11122312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32053120.

The product of its digits is 144, while the sum is 19.

Adding to 11122312231 its reverse (13221322111), we get a palindrome (24343634342).

The spelling of 11122312231 in words is "eleven billion, one hundred twenty-two million, three hundred twelve thousand, two hundred thirty-one".