2221168815 has 12 divisors (see below), whose sum is σ = 3850026024. Its totient is φ = 1184623344.

The previous prime is 2221168787. The next prime is 2221168823. The reversal of 2221168815 is 5188611222.

It is not a de Polignac number, because 2221168815 - 2¹¹ = 2221166767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221168815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24679609 + ... + 24679698.

It is an arithmetic number, because the mean of its divisors is an integer number (320835502).

Almost surely, 2^2221168815 is an apocalyptic number.

2221168815 is a deficient number, since it is larger than the sum of its proper divisors (1628857209).

2221168815 is a wasteful number, since it uses less digits than its factorization.

2221168815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49359318 (or 49359315 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 2221168815 is about 47129.2776838347. The cubic root of 2221168815 is about 1304.7496503072.

The spelling of 2221168815 in words is "two billion, two hundred twenty-one million, one hundred sixty-eight thousand, eight hundred fifteen".