10000021209999 has 32 divisors (see below), whose sum is σ = 13567609036800. Its totient is φ = 6550531012608.

The previous prime is 10000021209961. The next prime is 10000021210051. The reversal of 10000021209999 is 99990212000001.

10000021209999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10000021209999 - 2⁹ = 10000021209487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10000021209999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000021209599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33516027 + ... + 33813075.

It is an arithmetic number, because the mean of its divisors is an integer number (423987782400).

Almost surely, 2^{10000021209999} is an apocalyptic number.

10000021209999 is a deficient number, since it is larger than the sum of its proper divisors (3567587826801).

10000021209999 is a wasteful number, since it uses less digits than its factorization.

10000021209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297871.

The product of its (nonzero) digits is 26244, while the sum is 42.

The spelling of 10000021209999 in words is "ten trillion, twenty-one million, two hundred nine thousand, nine hundred ninety-nine".