22131223122 has 32 divisors (see below), whose sum is σ = 44550881280. Its totient is φ = 7329078800.

The previous prime is 22131223087. The next prime is 22131223159. The reversal of 22131223122 is 22132213122.

It is a nude number because it is divisible by every one of its digits.

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, 1227223 + ... + 1245125.

It is an arithmetic number, because the mean of its divisors is an integer number (1392215040).

Almost surely, 2^22131223122 is an apocalyptic number.

22131223122 is an abundant number, since it is smaller than the sum of its proper divisors (22419658158).

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

22131223122 is a wasteful number, since it uses less digits than its factorization.

22131223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19238.

The product of its digits is 576, while the sum is 21.

Adding to 22131223122 its reverse (22132213122), we get a palindrome (44263436244).

The spelling of 22131223122 in words is "twenty-two billion, one hundred thirty-one million, two hundred twenty-three thousand, one hundred twenty-two".