10120001111999 has 4 divisors (see below), whose sum is σ = 10121985820200. Its totient is φ = 10118016403800.

The previous prime is 10120001111939. The next prime is 10120001112017. The reversal of 10120001111999 is 99911110002101.

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 10120001111999 - 2²⁴ = 10119984334783 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 (10120001111929) 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, 992346452 + ... + 992356649.

It is an arithmetic number, because the mean of its divisors is an integer number (2530496455050).

Almost surely, 2^{10120001111999} is an apocalyptic number.

10120001111999 is a deficient number, since it is larger than the sum of its proper divisors (1984708201).

10120001111999 is an equidigital number, since it uses as much as digits as its factorization.

10120001111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984708200.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 10120001111999 in words is "ten trillion, one hundred twenty billion, one million, one hundred eleven thousand, nine hundred ninety-nine".