20366221200 has 120 divisors (see below), whose sum is σ = 70258294848. Its totient is φ = 5013219840.

The previous prime is 20366221189. The next prime is 20366221231. The reversal of 20366221200 is 212266302.

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 (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637164 + ... + 668363.

Almost surely, 2^20366221200 is an apocalyptic number.

20366221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20366221200 is an abundant number, since it is smaller than the sum of its proper divisors (49892073648).

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

20366221200 is a wasteful number, since it uses less digits than its factorization.

20366221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305561 (or 1305550 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20366221200 its reverse (212266302), we get a palindrome (20578487502).

The spelling of 20366221200 in words is "twenty billion, three hundred sixty-six million, two hundred twenty-one thousand, two hundred".