20021222200 has 48 divisors (see below), whose sum is σ = 53199251280. Its totient is φ = 6864418560.

The previous prime is 20021222173. The next prime is 20021222261. The reversal of 20021222200 is 222212002.

It is a congruent number.

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, 7149037 + ... + 7151836.

It is an arithmetic number, because the mean of its divisors is an integer number (1108317735).

Almost surely, 2^20021222200 is an apocalyptic number.

20021222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021222200 is an abundant number, since it is smaller than the sum of its proper divisors (33178029080).

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

20021222200 is a wasteful number, since it uses less digits than its factorization.

20021222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14300896 (or 14300887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20021222200 its reverse (222212002), we get a palindrome (20243434202).

The spelling of 20021222200 in words is "twenty billion, twenty-one million, two hundred twenty-two thousand, two hundred".