22111231231 has 8 divisors (see below), whose sum is σ = 22151491200. Its totient is φ = 22071004800.

The previous prime is 22111231223. The next prime is 22111231253. The reversal of 22111231231 is 13213211122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22111231231 - 2³ = 22111231223 is a prime.

It is a super-2 number, since 2×22111231231² (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 = 22111231199 and 22111231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111231031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571355 + ... + 1585363.

It is an arithmetic number, because the mean of its divisors is an integer number (2768936400).

Almost surely, 2^22111231231 is an apocalyptic number.

22111231231 is a deficient number, since it is larger than the sum of its proper divisors (40259969).

22111231231 is a wasteful number, since it uses less digits than its factorization.

22111231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16769.

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

Adding to 22111231231 its reverse (13213211122), we get a palindrome (35324442353).

The spelling of 22111231231 in words is "twenty-two billion, one hundred eleven million, two hundred thirty-one thousand, two hundred thirty-one".