1220160015 has 24 divisors (see below), whose sum is σ = 2118283440. Its totient is φ = 649724544.

The previous prime is 1220160013. The next prime is 1220160017. The reversal of 1220160015 is 5100610221.

It is an interprime number because it is at equal distance from previous prime (1220160013) and next prime (1220160017).

It is not a de Polignac number, because 1220160015 - 2¹ = 1220160013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220160015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220160013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7851 + ... + 50019.

It is an arithmetic number, because the mean of its divisors is an integer number (88261810).

Almost surely, 2^1220160015 is an apocalyptic number.

1220160015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220160015 is a deficient number, since it is larger than the sum of its proper divisors (898123425).

1220160015 is a wasteful number, since it uses less digits than its factorization.

1220160015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42823 (or 42820 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1220160015 is about 34930.7889261036. The cubic root of 1220160015 is about 1068.5764441680.

Adding to 1220160015 its reverse (5100610221), we get a palindrome (6320770236).

The spelling of 1220160015 in words is "one billion, two hundred twenty million, one hundred sixty thousand, fifteen".