10221201001999 has 16 divisors (see below), whose sum is σ = 11019132329184. Its totient is φ = 9424940515200.

The previous prime is 10221201001997. The next prime is 10221201002029. The reversal of 10221201001999 is 99910010212201.

10221201001999 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 10221201001999 - 2¹ = 10221201001997 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 (10221201001997) 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, 218888244 + ... + 218934934.

It is an arithmetic number, because the mean of its divisors is an integer number (688695770574).

Almost surely, 2^{10221201001999} is an apocalyptic number.

10221201001999 is a deficient number, since it is larger than the sum of its proper divisors (797931327185).

10221201001999 is a wasteful number, since it uses less digits than its factorization.

10221201001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64218.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 10221201001999 in words is "ten trillion, two hundred twenty-one billion, two hundred one million, one thousand, nine hundred ninety-nine".