2221112221864 has 32 divisors (see below), whose sum is σ = 4534938756000. Its totient is φ = 1015826277312.

The previous prime is 2221112221859. The next prime is 2221112221877. The reversal of 2221112221864 is 4681222111222.

It is a super-2 number, since 2×2221112221864² (a number of 25 digits) contains 22 as substring.

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, 251936634 + ... + 251945449.

It is an arithmetic number, because the mean of its divisors is an integer number (141716836125).

Almost surely, 2^{2221112221864} is an apocalyptic number.

It is an amenable number.

2221112221864 is an abundant number, since it is smaller than the sum of its proper divisors (2313826534136).

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

2221112221864 is a wasteful number, since it uses less digits than its factorization.

2221112221864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503882137 (or 503882133 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The spelling of 2221112221864 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, eight hundred sixty-four".