2221209589 has 2 divisors, whose sum is σ = 2221209590. Its totient is φ = 2221209588.

The previous prime is 2221209581. The next prime is 2221209629. The reversal of 2221209589 is 9859021222.

It is an a-pointer prime, because the next prime (2221209629) can be obtained adding 2221209589 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1472256900 + 748952689 = 38370^2 + 27367^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221209589 - 2³ = 2221209581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221209581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110604794 + 1110604795.

It is an arithmetic number, because the mean of its divisors is an integer number (1110604795).

Almost surely, 2^2221209589 is an apocalyptic number.

It is an amenable number.

2221209589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221209589 is an equidigital number, since it uses as much as digits as its factorization.

2221209589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 2221209589 is about 47129.7102579679. The cubic root of 2221209589 is about 1304.7576340222.

The spelling of 2221209589 in words is "two billion, two hundred twenty-one million, two hundred nine thousand, five hundred eighty-nine".