2221700591 has 16 divisors (see below), whose sum is σ = 2532031488. Its totient is φ = 1931001600.

The previous prime is 2221700561. The next prime is 2221700597. The reversal of 2221700591 is 1950071222.

It is not a de Polignac number, because 2221700591 - 2³⁰ = 1147958767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221700597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10946 + ... + 67551.

It is an arithmetic number, because the mean of its divisors is an integer number (158251968).

Almost surely, 2^2221700591 is an apocalyptic number.

2221700591 is a deficient number, since it is larger than the sum of its proper divisors (310330897).

2221700591 is a wasteful number, since it uses less digits than its factorization.

2221700591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78622.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2221700591 is about 47134.9190197671. The cubic root of 2221700591 is about 1304.8537665397.

The spelling of 2221700591 in words is "two billion, two hundred twenty-one million, seven hundred thousand, five hundred ninety-one".