21201002102200 has 24 divisors (see below), whose sum is σ = 49292329888080. Its totient is φ = 8480400840800.

The previous prime is 21201002102131. The next prime is 21201002102227. The reversal of 21201002102200 is 220120010212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53002505056 + ... + 53002505455.

It is an arithmetic number, because the mean of its divisors is an integer number (2053847078670).

Almost surely, 2^{21201002102200} is an apocalyptic number.

21201002102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21201002102200 is an abundant number, since it is smaller than the sum of its proper divisors (28091327785880).

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

21201002102200 is a wasteful number, since it uses less digits than its factorization.

21201002102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106005010527 (or 106005010518 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21201002102200 its reverse (220120010212), we get a palindrome (21421122112412).

The spelling of 21201002102200 in words is "twenty-one trillion, two hundred one billion, two million, one hundred two thousand, two hundred".