21002200010010 has 64 divisors (see below), whose sum is σ = 58440904392960. Its totient is φ = 5357082899520.

The previous prime is 21002200009991. The next prime is 21002200010047. The reversal of 21002200010010 is 1001000220012.

It is a super-5 number, since 5×21002200010010⁵ (a number of 68 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21002200009974 and 21002200010001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1690992181 + ... + 1691004600.

It is an arithmetic number, because the mean of its divisors is an integer number (913139131140).

Almost surely, 2^{21002200010010} is an apocalyptic number.

21002200010010 is an abundant number, since it is smaller than the sum of its proper divisors (37438704382950).

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

21002200010010 is a wasteful number, since it uses less digits than its factorization.

21002200010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381996820 (or 3381996814 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 21002200010010 its reverse (1001000220012), we get a palindrome (22003200230022).

The spelling of 21002200010010 in words is "twenty-one trillion, two billion, two hundred million, ten thousand, ten".