22129563220 has 12 divisors (see below), whose sum is σ = 46472082804. Its totient is φ = 8851825280.

The previous prime is 22129563199. The next prime is 22129563233. The reversal of 22129563220 is 2236592122.

It can be written as a sum of positive squares in 2 ways, for example, as 15945628176 + 6183935044 = 126276^2 + 78638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553239061 + ... + 553239100.

It is an arithmetic number, because the mean of its divisors is an integer number (3872673567).

Almost surely, 2^22129563220 is an apocalyptic number.

22129563220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22129563220 is an abundant number, since it is smaller than the sum of its proper divisors (24342519584).

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

22129563220 is a wasteful number, since it uses less digits than its factorization.

22129563220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106478170 (or 1106478168 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 22129563220 in words is "twenty-two billion, one hundred twenty-nine million, five hundred sixty-three thousand, two hundred twenty".