1122887251 has 12 divisors (see below), whose sum is σ = 1212674232. Its totient is φ = 1039034304.

The previous prime is 1122887243. The next prime is 1122887261. The reversal of 1122887251 is 1527882211.

It is not a de Polignac number, because 1122887251 - 2³ = 1122887243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122887251.

It is not an unprimeable number, because it can be changed into a prime (1122887231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20646 + ... + 51691.

It is an arithmetic number, because the mean of its divisors is an integer number (101056186).

Almost surely, 2^1122887251 is an apocalyptic number.

1122887251 is a deficient number, since it is larger than the sum of its proper divisors (89786981).

1122887251 is an equidigital number, since it uses as much as digits as its factorization.

1122887251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72418 (or 72399 counting only the distinct ones).

The product of its digits is 17920, while the sum is 37.

The square root of 1122887251 is about 33509.5098591430. The cubic root of 1122887251 is about 1039.3904376047.

The spelling of 1122887251 in words is "one billion, one hundred twenty-two million, eight hundred eighty-seven thousand, two hundred fifty-one".