22022221200 has 120 divisors (see below), whose sum is σ = 80622333888. Its totient is φ = 5033648640.

The previous prime is 22022221139. The next prime is 22022221201. The reversal of 22022221200 is 212222022.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22022221200.

It is not an unprimeable number, because it can be changed into a prime (22022221201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1302447 + ... + 1319246.

Almost surely, 2^22022221200 is an apocalyptic number.

22022221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022221200 is an abundant number, since it is smaller than the sum of its proper divisors (58600112688).

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

22022221200 is a wasteful number, since it uses less digits than its factorization.

22022221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621721 (or 2621710 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22022221200 its reverse (212222022), we get a palindrome (22234443222).

The spelling of 22022221200 in words is "twenty-two billion, twenty-two million, two hundred twenty-one thousand, two hundred".