2415662221 has 8 divisors (see below), whose sum is σ = 2817099200. Its totient is φ = 2070567324.

The previous prime is 2415662203. The next prime is 2415662257. The reversal of 2415662221 is 1222665142.

It is not a de Polignac number, because 2415662221 - 2²¹ = 2413565069 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 (2415662201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3521031 + ... + 3521716.

It is an arithmetic number, because the mean of its divisors is an integer number (352137400).

Almost surely, 2^2415662221 is an apocalyptic number.

It is an amenable number.

2415662221 is a deficient number, since it is larger than the sum of its proper divisors (401436979).

2415662221 is an frugal number, since it uses more digits than its factorization.

2415662221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042768 (or 7042754 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 2415662221 is about 49149.3867815256. The cubic root of 2415662221 is about 1341.7720339008.

The spelling of 2415662221 in words is "two billion, four hundred fifteen million, six hundred sixty-two thousand, two hundred twenty-one".