22215405522 has 16 divisors (see below), whose sum is σ = 44930034720. Its totient is φ = 7321931232.

The previous prime is 22215405497. The next prime is 22215405529. The reversal of 22215405522 is 22550451222.

It is a self number, because there is not a number n which added to its sum of digits gives 22215405522.

It is not an unprimeable number, because it can be changed into a prime (22215405529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20800408 + ... + 20801475.

It is an arithmetic number, because the mean of its divisors is an integer number (2808127170).

Almost surely, 2^22215405522 is an apocalyptic number.

22215405522 is an abundant number, since it is smaller than the sum of its proper divisors (22714629198).

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

22215405522 is a wasteful number, since it uses less digits than its factorization.

22215405522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41601977.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 22215405522 its reverse (22550451222), we get a palindrome (44765856744).

The spelling of 22215405522 in words is "twenty-two billion, two hundred fifteen million, four hundred five thousand, five hundred twenty-two".