2120907999 has 8 divisors (see below), whose sum is σ = 3231859840. Its totient is φ = 1211947416.

The previous prime is 2120907991. The next prime is 2120908019. The reversal of 2120907999 is 9997090212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120907999 - 2³ = 2120907991 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 (2120907991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50497789 + ... + 50497830.

It is an arithmetic number, because the mean of its divisors is an integer number (403982480).

Almost surely, 2^2120907999 is an apocalyptic number.

2120907999 is a deficient number, since it is larger than the sum of its proper divisors (1110951841).

2120907999 is a wasteful number, since it uses less digits than its factorization.

2120907999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100995629.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 2120907999 is about 46053.3169163742. The cubic root of 2120907999 is about 1284.8150347204.

The spelling of 2120907999 in words is "two billion, one hundred twenty million, nine hundred seven thousand, nine hundred ninety-nine".