22123131330 has 64 divisors (see below), whose sum is σ = 53976480768. Its totient is φ = 5801906880.

The previous prime is 22123131269. The next prime is 22123131337. The reversal of 22123131330 is 3313132122.

It is a junction number, because it is equal to n+sod(n) for n = 22123131297 and 22123131306.

It is not an unprimeable number, because it can be changed into a prime (22123131337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259589 + ... + 1277031.

It is an arithmetic number, because the mean of its divisors is an integer number (843382512).

Almost surely, 2^22123131330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22123131330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26988240384).

22123131330 is an abundant number, since it is smaller than the sum of its proper divisors (31853349438).

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

22123131330 is a wasteful number, since it uses less digits than its factorization.

22123131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18151.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 22123131330 its reverse (3313132122), we get a palindrome (25436263452).

The spelling of 22123131330 in words is "twenty-two billion, one hundred twenty-three million, one hundred thirty-one thousand, three hundred thirty".