2120251051 has 8 divisors (see below), whose sum is σ = 2131932240. Its totient is φ = 2108590848.

The previous prime is 2120251039. The next prime is 2120251069. The reversal of 2120251051 is 1501520212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120251051 - 2²³ = 2111862443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120251751) 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, 224415 + ... + 233671.

It is an arithmetic number, because the mean of its divisors is an integer number (266491530).

Almost surely, 2^2120251051 is an apocalyptic number.

2120251051 is a deficient number, since it is larger than the sum of its proper divisors (11681189).

2120251051 is a wasteful number, since it uses less digits than its factorization.

2120251051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2120251051 is about 46046.1838918276. The cubic root of 2120251051 is about 1284.6823645258.

Adding to 2120251051 its reverse (1501520212), we get a palindrome (3621771263).

The spelling of 2120251051 in words is "two billion, one hundred twenty million, two hundred fifty-one thousand, fifty-one".