22122115638 has 32 divisors (see below), whose sum is σ = 50605440000. Its totient is φ = 6315528960.

The previous prime is 22122115637. The next prime is 22122115643. The reversal of 22122115638 is 83651122122.

It is a junction number, because it is equal to n+sod(n) for n = 22122115599 and 22122115608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122115637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158398 + ... + 263313.

It is an arithmetic number, because the mean of its divisors is an integer number (1581420000).

Almost surely, 2^22122115638 is an apocalyptic number.

22122115638 is an abundant number, since it is smaller than the sum of its proper divisors (28483324362).

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

22122115638 is a wasteful number, since it uses less digits than its factorization.

22122115638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422972.

The product of its digits is 11520, while the sum is 33.

The spelling of 22122115638 in words is "twenty-two billion, one hundred twenty-two million, one hundred fifteen thousand, six hundred thirty-eight".