22115442251231 has 16 divisors (see below), whose sum is σ = 26148728486400. Its totient is φ = 18300759992928.

The previous prime is 22115442251209. The next prime is 22115442251293. The reversal of 22115442251231 is 13215224451122.

It is a de Polignac number, because none of the positive numbers 2^k-22115442251231 is a prime.

It is a super-2 number, since 2×22115442251231² (a number of 27 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 = 22115442251191 and 22115442251200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115442251131) 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 15 ways as a sum of consecutive naturals, for example, 2758955 + ... + 7200188.

It is an arithmetic number, because the mean of its divisors is an integer number (1634295530400).

Almost surely, 2^{22115442251231} is an apocalyptic number.

22115442251231 is a deficient number, since it is larger than the sum of its proper divisors (4033286235169).

22115442251231 is a wasteful number, since it uses less digits than its factorization.

22115442251231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970118.

The product of its digits is 38400, while the sum is 35.

The spelling of 22115442251231 in words is "twenty-two trillion, one hundred fifteen billion, four hundred forty-two million, two hundred fifty-one thousand, two hundred thirty-one".