2015220243 has 8 divisors (see below), whose sum is σ = 2720972800. Its totient is φ = 1326473928.

The previous prime is 2015220157. The next prime is 2015220247. The reversal of 2015220243 is 3420225102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2015220243 - 2¹³ = 2015212051 is a prime.

It is a super-2 number, since 2×2015220243² = 8122225255593958098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015220247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4251283 + ... + 4251756.

It is an arithmetic number, because the mean of its divisors is an integer number (340121600).

Almost surely, 2^2015220243 is an apocalyptic number.

2015220243 is a deficient number, since it is larger than the sum of its proper divisors (705752557).

2015220243 is an equidigital number, since it uses as much as digits as its factorization.

2015220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503121.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2015220243 is about 44891.2045171434. The cubic root of 2015220243 is about 1263.1090273108.

Adding to 2015220243 its reverse (3420225102), we get a palindrome (5435445345).

The spelling of 2015220243 in words is "two billion, fifteen million, two hundred twenty thousand, two hundred forty-three".