2251012122 has 12 divisors (see below), whose sum is σ = 4877192970. Its totient is φ = 750337368.

The previous prime is 2251012097. The next prime is 2251012123. The reversal of 2251012122 is 2212101522.

2251012122 is a `hidden beast` number, since 22 + 510 + 12 + 122 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1400181561 + 850830561 = 37419^2 + 29169^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 125056229 = 2251012122 / (2 + 2 + 5 + 1 + 0 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2251012095 and 2251012104.

It is not an unprimeable number, because it can be changed into a prime (2251012123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62528097 + ... + 62528132.

Almost surely, 2^2251012122 is an apocalyptic number.

2251012122 is an abundant number, since it is smaller than the sum of its proper divisors (2626180848).

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

2251012122 is a wasteful number, since it uses less digits than its factorization.

2251012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125056237 (or 125056234 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2251012122 is about 47444.8324056477. The cubic root of 2251012122 is about 1310.5671498743.

Adding to 2251012122 its reverse (2212101522), we get a palindrome (4463113644).

The spelling of 2251012122 in words is "two billion, two hundred fifty-one million, twelve thousand, one hundred twenty-two".