22011113231 has 8 divisors (see below), whose sum is σ = 22294443600. Its totient is φ = 21728583360.

The previous prime is 22011113213. The next prime is 22011113251. The reversal of 22011113231 is 13231111022.

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 22011113231 - 2¹⁴ = 22011096847 is a prime.

It is a super-2 number, since 2×22011113231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011113251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144680 + ... + 254861.

It is an arithmetic number, because the mean of its divisors is an integer number (2786805450).

Almost surely, 2^22011113231 is an apocalyptic number.

22011113231 is a deficient number, since it is larger than the sum of its proper divisors (283330369).

22011113231 is an equidigital number, since it uses as much as digits as its factorization.

22011113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400249.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 22011113231 its reverse (13231111022), we get a palindrome (35242224253).

The spelling of 22011113231 in words is "twenty-two billion, eleven million, one hundred thirteen thousand, two hundred thirty-one".