2215205015 has 4 divisors (see below), whose sum is σ = 2658246024. Its totient is φ = 1772164008.

The previous prime is 2215204997. The next prime is 2215205021. The reversal of 2215205015 is 5105025122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2215205015 - 2¹⁸ = 2214942871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221520497 + ... + 221520506.

It is an arithmetic number, because the mean of its divisors is an integer number (664561506).

Almost surely, 2^2215205015 is an apocalyptic number.

2215205015 is a deficient number, since it is larger than the sum of its proper divisors (443041009).

2215205015 is an equidigital number, since it uses as much as digits as its factorization.

2215205015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443041008.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2215205015 is about 47065.9645072743. The cubic root of 2215205015 is about 1303.5808601779.

The spelling of 2215205015 in words is "two billion, two hundred fifteen million, two hundred five thousand, fifteen".