10021001209999 has 16 divisors (see below), whose sum is σ = 10851400209888. Its totient is φ = 9199226437632.

The previous prime is 10021001209993. The next prime is 10021001210069. The reversal of 10021001209999 is 99990210012001.

10021001209999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10021001209999 - 2³¹ = 10018853726351 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 (10021001209993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369237 + ... + 4492030.

It is an arithmetic number, because the mean of its divisors is an integer number (678212513118).

Almost surely, 2^{10021001209999} is an apocalyptic number.

10021001209999 is a deficient number, since it is larger than the sum of its proper divisors (830398999889).

10021001209999 is a wasteful number, since it uses less digits than its factorization.

10021001209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862154.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 10021001209999 in words is "ten trillion, twenty-one billion, one million, two hundred nine thousand, nine hundred ninety-nine".