21020213002200 has 96 divisors (see below), whose sum is σ = 65539323406800. Its totient is φ = 5572989007360.

The previous prime is 21020213002193. The next prime is 21020213002231. The reversal of 21020213002200 is 220031202012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21020213002200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101149635 + ... + 101357234.

Almost surely, 2^{21020213002200} is an apocalyptic number.

21020213002200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020213002200 is an abundant number, since it is smaller than the sum of its proper divisors (44519110404600).

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

21020213002200 is a wasteful number, since it uses less digits than its factorization.

21020213002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202507061 (or 202507052 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21020213002200 its reverse (220031202012), we get a palindrome (21240244204212).

The spelling of 21020213002200 in words is "twenty-one trillion, twenty billion, two hundred thirteen million, two thousand, two hundred".