22511112052231 has 4 divisors (see below), whose sum is σ = 24557576784264. Its totient is φ = 20464647320200.

The previous prime is 22511112052213. The next prime is 22511112052301. The reversal of 22511112052231 is 13225021111522.

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 22511112052231 - 2⁵ = 22511112052199 is a prime.

It is a super-2 number, since 2×22511112052231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22511112052231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22511112052201) 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 3 ways as a sum of consecutive naturals, for example, 1023232366000 + ... + 1023232366021.

It is an arithmetic number, because the mean of its divisors is an integer number (6139394196066).

Almost surely, 2^{22511112052231} is an apocalyptic number.

22511112052231 is a deficient number, since it is larger than the sum of its proper divisors (2046464732033).

22511112052231 is a wasteful number, since it uses less digits than its factorization.

22511112052231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046464732032.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 22511112052231 its reverse (13225021111522), we get a palindrome (35736133163753).

The spelling of 22511112052231 in words is "twenty-two trillion, five hundred eleven billion, one hundred twelve million, fifty-two thousand, two hundred thirty-one".