22151322125 has 16 divisors (see below), whose sum is σ = 27649028160. Its totient is φ = 17718379600.

The previous prime is 22151322091. The next prime is 22151322139. The reversal of 22151322125 is 52122315122.

It is a happy number.

It is not a de Polignac number, because 22151322125 - 2⁸ = 22151321869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22151322094 and 22151322103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484954 + ... + 1499796.

It is an arithmetic number, because the mean of its divisors is an integer number (1728064260).

Almost surely, 2^22151322125 is an apocalyptic number.

22151322125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22151322125 is a deficient number, since it is larger than the sum of its proper divisors (5497706035).

22151322125 is a wasteful number, since it uses less digits than its factorization.

22151322125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26797 (or 26787 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

Adding to 22151322125 its reverse (52122315122), we get a palindrome (74273637247).

The spelling of 22151322125 in words is "twenty-two billion, one hundred fifty-one million, three hundred twenty-two thousand, one hundred twenty-five".