2221352125856 has 24 divisors (see below), whose sum is σ = 4373416758564. Its totient is φ = 1110643107840.

The previous prime is 2221352125849. The next prime is 2221352125871. The reversal of 2221352125856 is 6585212531222.

It can be written as a sum of positive squares in 2 ways, for example, as 1861903914256 + 359448211600 = 1364516^2 + 599540^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 84026 + ... + 2109446.

Almost surely, 2^{2221352125856} is an apocalyptic number.

It is an amenable number.

2221352125856 is a deficient number, since it is larger than the sum of its proper divisors (2152064632708).

2221352125856 is a wasteful number, since it uses less digits than its factorization.

2221352125856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059704 (or 2059696 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The spelling of 2221352125856 in words is "two trillion, two hundred twenty-one billion, three hundred fifty-two million, one hundred twenty-five thousand, eight hundred fifty-six".