2215104209 has 2 divisors, whose sum is σ = 2215104210. Its totient is φ = 2215104208.

The previous prime is 2215104167. The next prime is 2215104239. The reversal of 2215104209 is 9024015122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1495523584 + 719580625 = 38672^2 + 26825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215104209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215104239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107552104 + 1107552105.

It is an arithmetic number, because the mean of its divisors is an integer number (1107552105).

Almost surely, 2^2215104209 is an apocalyptic number.

It is an amenable number.

2215104209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215104209 is an equidigital number, since it uses as much as digits as its factorization.

2215104209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2215104209 is about 47064.8935938455. The cubic root of 2215104209 is about 1303.5610861216.

The spelling of 2215104209 in words is "two billion, two hundred fifteen million, one hundred four thousand, two hundred nine".