2251240120 has 16 divisors (see below), whose sum is σ = 5065290360. Its totient is φ = 900496032.

The previous prime is 2251240091. The next prime is 2251240139. The reversal of 2251240120 is 210421522.

It is a super-2 number, since 2×2251240120² = 10136164155795228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28140462 + ... + 28140541.

Almost surely, 2^2251240120 is an apocalyptic number.

2251240120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251240120 is an abundant number, since it is smaller than the sum of its proper divisors (2814050240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251240120 is a wasteful number, since it uses less digits than its factorization.

2251240120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56281014 (or 56281010 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2251240120 is about 47447.2351143879. The cubic root of 2251240120 is about 1310.6113961340.

Adding to 2251240120 its reverse (210421522), we get a palindrome (2461661642).

The spelling of 2251240120 in words is "two billion, two hundred fifty-one million, two hundred forty thousand, one hundred twenty".