20220661200 has 60 divisors (see below), whose sum is σ = 64773521888. Its totient is φ = 5392176000.

The previous prime is 20220661159. The next prime is 20220661211. The reversal of 20220661200 is 216602202.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8424076 + ... + 8426475.

Almost surely, 2^20220661200 is an apocalyptic number.

20220661200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220661200 is an abundant number, since it is smaller than the sum of its proper divisors (44552860688).

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

20220661200 is a wasteful number, since it uses less digits than its factorization.

20220661200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16850572 (or 16850561 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The spelling of 20220661200 in words is "twenty billion, two hundred twenty million, six hundred sixty-one thousand, two hundred".