22220988372 has 54 divisors (see below), whose sum is σ = 61740283514. Its totient is φ = 6733631520.

The previous prime is 22220988359. The next prime is 22220988379. The reversal of 22220988372 is 27388902222.

It can be written as a sum of positive squares in only one way, i.e., 11701614276 + 10519374096 = 108174^2 + 102564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220988379) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2546263 + ... + 2554974.

Almost surely, 2^22220988372 is an apocalyptic number.

22220988372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22220988372 is an abundant number, since it is smaller than the sum of its proper divisors (39519295142).

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

22220988372 is a wasteful number, since it uses less digits than its factorization.

22220988372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101269 (or 5101253 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 22220988372 in words is "twenty-two billion, two hundred twenty million, nine hundred eighty-eight thousand, three hundred seventy-two".