10120801999 has 16 divisors (see below), whose sum is σ = 12698528256. Its totient is φ = 7836098400.

The previous prime is 10120801969. The next prime is 10120802039. The reversal of 10120801999 is 99910802101.

It is a cyclic number.

It is not a de Polignac number, because 10120801999 - 2⁷ = 10120801871 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 (10120801949) 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, 406507 + ... + 430684.

It is an arithmetic number, because the mean of its divisors is an integer number (793658016).

Almost surely, 2^10120801999 is an apocalyptic number.

10120801999 is a deficient number, since it is larger than the sum of its proper divisors (2577726257).

10120801999 is a wasteful number, since it uses less digits than its factorization.

10120801999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837366.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 10120801999 in words is "ten billion, one hundred twenty million, eight hundred one thousand, nine hundred ninety-nine".