22122332220 has 96 divisors (see below), whose sum is σ = 67701989376. Its totient is φ = 5373158400.

The previous prime is 22122332179. The next prime is 22122332233. The reversal of 22122332220 is 2223322122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318196 + ... + 381435.

It is an arithmetic number, because the mean of its divisors is an integer number (705229056).

Almost surely, 2^22122332220 is an apocalyptic number.

22122332220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122332220 is an abundant number, since it is smaller than the sum of its proper divisors (45579657156).

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

22122332220 is a wasteful number, since it uses less digits than its factorization.

22122332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699691 (or 699689 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22122332220 its reverse (2223322122), we get a palindrome (24345654342).

The spelling of 22122332220 in words is "twenty-two billion, one hundred twenty-two million, three hundred thirty-two thousand, two hundred twenty".