22131123306 has 16 divisors (see below), whose sum is σ = 44438593248. Its totient is φ = 7347650000.

The previous prime is 22131123283. The next prime is 22131123317. The reversal of 22131123306 is 60332113122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7346145 + ... + 7349156.

It is an arithmetic number, because the mean of its divisors is an integer number (2777412078).

Almost surely, 2^22131123306 is an apocalyptic number.

22131123306 is an abundant number, since it is smaller than the sum of its proper divisors (22307469942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22131123306 is a wasteful number, since it uses less digits than its factorization.

22131123306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14695557.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 22131123306 its reverse (60332113122), we get a palindrome (82463236428).

The spelling of 22131123306 in words is "twenty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, three hundred six".