22102251231031 has 4 divisors (see below), whose sum is σ = 22102655252832. Its totient is φ = 22101847209232.

The previous prime is 22102251231029. The next prime is 22102251231043. The reversal of 22102251231031 is 13013215220122.

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 22102251231031 - 2¹ = 22102251231029 is a prime.

It is a super-2 number, since 2×22102251231031² (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 = 22102251230987 and 22102251231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102251331031) 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, 201928831 + ... + 202038256.

It is an arithmetic number, because the mean of its divisors is an integer number (5525663813208).

Almost surely, 2^{22102251231031} is an apocalyptic number.

22102251231031 is a deficient number, since it is larger than the sum of its proper divisors (404021801).

22102251231031 is an equidigital number, since it uses as much as digits as its factorization.

22102251231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404021800.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 22102251231031 its reverse (13013215220122), we get a palindrome (35115466451153).

The spelling of 22102251231031 in words is "twenty-two trillion, one hundred two billion, two hundred fifty-one million, two hundred thirty-one thousand, thirty-one".