22155255231 has 8 divisors (see below), whose sum is σ = 29945002800. Its totient is φ = 14567838912.

The previous prime is 22155255211. The next prime is 22155255301. The reversal of 22155255231 is 13255255122.

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

It is a de Polignac number, because none of the positive numbers 2^k-22155255231 is a prime.

It is a super-2 number, since 2×22155255231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22155255192 and 22155255201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155255211) 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, 50582556 + ... + 50582993.

It is an arithmetic number, because the mean of its divisors is an integer number (3743125350).

Almost surely, 2^22155255231 is an apocalyptic number.

22155255231 is a deficient number, since it is larger than the sum of its proper divisors (7789747569).

22155255231 is a wasteful number, since it uses less digits than its factorization.

22155255231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101165625.

The product of its digits is 30000, while the sum is 33.

The spelling of 22155255231 in words is "twenty-two billion, one hundred fifty-five million, two hundred fifty-five thousand, two hundred thirty-one".