2221512258 has 16 divisors (see below), whose sum is σ = 5077742400. Its totient is φ = 634717776.

The previous prime is 2221512187. The next prime is 2221512263. The reversal of 2221512258 is 8522151222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26446533 + ... + 26446616.

It is an arithmetic number, because the mean of its divisors is an integer number (317358900).

Almost surely, 2^2221512258 is an apocalyptic number.

2221512258 is an abundant number, since it is smaller than the sum of its proper divisors (2856230142).

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

2221512258 is a wasteful number, since it uses less digits than its factorization.

2221512258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52893161.

The product of its digits is 6400, while the sum is 30.

The square root of 2221512258 is about 47132.9211698151. The cubic root of 2221512258 is about 1304.8168947894.

The spelling of 2221512258 in words is "two billion, two hundred twenty-one million, five hundred twelve thousand, two hundred fifty-eight".