10021002221999 has 4 divisors (see below), whose sum is σ = 10021013483136. Its totient is φ = 10020990960864.

The previous prime is 10021002221987. The next prime is 10021002222013. The reversal of 10021002221999 is 99912220012001.

It is a happy number.

10021002221999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021002221999 - 2⁸ = 10021002221743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021002221939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4169354 + ... + 6117639.

It is an arithmetic number, because the mean of its divisors is an integer number (2505253370784).

Almost surely, 2^{10021002221999} is an apocalyptic number.

10021002221999 is a deficient number, since it is larger than the sum of its proper divisors (11261137).

10021002221999 is an equidigital number, since it uses as much as digits as its factorization.

10021002221999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11261136.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 10021002221999 in words is "ten trillion, twenty-one billion, two million, two hundred twenty-one thousand, nine hundred ninety-nine".