2122091256 has 16 divisors (see below), whose sum is σ = 5305228200. Its totient is φ = 707363744.

The previous prime is 2122091233. The next prime is 2122091261. The reversal of 2122091256 is 6521902212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44210211 + ... + 44210258.

Almost surely, 2^2122091256 is an apocalyptic number.

It is an amenable number.

2122091256 is an abundant number, since it is smaller than the sum of its proper divisors (3183136944).

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

2122091256 is a wasteful number, since it uses less digits than its factorization.

2122091256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88420478 (or 88420474 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2122091256 is about 46066.1617241984. The cubic root of 2122091256 is about 1285.0539235599.

Adding to 2122091256 its reverse (6521902212), we get a palindrome (8643993468).

The spelling of 2122091256 in words is "two billion, one hundred twenty-two million, ninety-one thousand, two hundred fifty-six".