2251120251 has 16 divisors (see below), whose sum is σ = 3059765280. Its totient is φ = 1471641600.

The previous prime is 2251120243. The next prime is 2251120253. The reversal of 2251120251 is 1520211522.

It is not a de Polignac number, because 2251120251 - 2³ = 2251120243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251120253) 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, 522715 + ... + 527003.

It is an arithmetic number, because the mean of its divisors is an integer number (191235330).

Almost surely, 2^2251120251 is an apocalyptic number.

2251120251 is a deficient number, since it is larger than the sum of its proper divisors (808645029).

2251120251 is a wasteful number, since it uses less digits than its factorization.

2251120251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2251120251 is about 47445.9719154324. The cubic root of 2251120251 is about 1310.5881342195.

Adding to 2251120251 its reverse (1520211522), we get a palindrome (3771331773).

The spelling of 2251120251 in words is "two billion, two hundred fifty-one million, one hundred twenty thousand, two hundred fifty-one".