21002033020200 has 96 divisors (see below), whose sum is σ = 65119045358400. Its totient is φ = 5599445967360.

The previous prime is 21002033020121. The next prime is 21002033020217. The reversal of 21002033020200 is 202033020012.

It is a super-2 number, since 2×21002033020200² (a number of 27 digits) contains 22 as substring.

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 21002033020200.

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, 355180 + ... + 6490779.

It is an arithmetic number, because the mean of its divisors is an integer number (678323389150).

Almost surely, 2^{21002033020200} is an apocalyptic number.

21002033020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002033020200 is an abundant number, since it is smaller than the sum of its proper divisors (44117012338200).

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

21002033020200 is a wasteful number, since it uses less digits than its factorization.

21002033020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851091 (or 6851082 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21002033020200 its reverse (202033020012), we get a palindrome (21204066040212).

The spelling of 21002033020200 in words is "twenty-one trillion, two billion, thirty-three million, twenty thousand, two hundred".