2221716591 has 12 divisors (see below), whose sum is σ = 3209563968. Its totient is φ = 1480951584.

The previous prime is 2221716557. The next prime is 2221716611. The reversal of 2221716591 is 1956171222.

2221716591 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221716591 - 2²³ = 2213327983 is a prime.

It is a super-2 number, since 2×2221716591² = 9872049221449322562, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221716191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104611 + ... + 124043.

It is an arithmetic number, because the mean of its divisors is an integer number (267463664).

Almost surely, 2^2221716591 is an apocalyptic number.

2221716591 is a deficient number, since it is larger than the sum of its proper divisors (987847377).

2221716591 is a wasteful number, since it uses less digits than its factorization.

2221716591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32142 (or 32139 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 2221716591 is about 47135.0887450103. The cubic root of 2221716591 is about 1304.8568989165.

The spelling of 2221716591 in words is "two billion, two hundred twenty-one million, seven hundred sixteen thousand, five hundred ninety-one".