20021100011200 has 84 divisors (see below), whose sum is σ = 49265917908912. Its totient is φ = 8008196377600.

The previous prime is 20021100011183. The next prime is 20021100011201. The reversal of 20021100011200 is 211000112002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20021100011201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57973437 + ... + 58317763.

Almost surely, 2^{20021100011200} is an apocalyptic number.

20021100011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021100011200 is an abundant number, since it is smaller than the sum of its proper divisors (29244817897712).

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

20021100011200 is a wasteful number, since it uses less digits than its factorization.

20021100011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380690 (or 380675 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20021100011200 its reverse (211000112002), we get a palindrome (20232100123202).

The spelling of 20021100011200 in words is "twenty trillion, twenty-one billion, one hundred million, eleven thousand, two hundred".