2120207951 has 8 divisors (see below), whose sum is σ = 2195192880. Its totient is φ = 2045348032.

The previous prime is 2120207939. The next prime is 2120207959. The reversal of 2120207951 is 1597020212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120207951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120207959) 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, 3956 + ... + 65238.

It is an arithmetic number, because the mean of its divisors is an integer number (274399110).

Almost surely, 2^2120207951 is an apocalyptic number.

2120207951 is a deficient number, since it is larger than the sum of its proper divisors (74984929).

2120207951 is a wasteful number, since it uses less digits than its factorization.

2120207951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62505.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2120207951 is about 46045.7158810676. The cubic root of 2120207951 is about 1284.6736595527.

The spelling of 2120207951 in words is "two billion, one hundred twenty million, two hundred seven thousand, nine hundred fifty-one".