22212023200 has 72 divisors (see below), whose sum is σ = 57414848652. Its totient is φ = 8362168320.

The previous prime is 22212023189. The next prime is 22212023227. The reversal of 22212023200 is 232021222.

It can be written as a sum of positive squares in 6 ways, for example, as 3658314256 + 18553708944 = 60484^2 + 136212^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 803019 + ... + 830218.

Almost surely, 2^22212023200 is an apocalyptic number.

22212023200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212023200 is an abundant number, since it is smaller than the sum of its proper divisors (35202825452).

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

22212023200 is a wasteful number, since it uses less digits than its factorization.

22212023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633274 (or 1633261 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 22212023200 its reverse (232021222), we get a palindrome (22444044422).

The spelling of 22212023200 in words is "twenty-two billion, two hundred twelve million, twenty-three thousand, two hundred".