1220515132015 has 8 divisors (see below), whose sum is σ = 1528297208928. Its totient is φ = 933959405280.

The previous prime is 1220515132003. The next prime is 1220515132091. The reversal of 1220515132015 is 5102315150221.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1220515132015 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306587416 + ... + 5306587645.

It is an arithmetic number, because the mean of its divisors is an integer number (191037151116).

Almost surely, 2^{1220515132015} is an apocalyptic number.

1220515132015 is a deficient number, since it is larger than the sum of its proper divisors (307782076913).

1220515132015 is a wasteful number, since it uses less digits than its factorization.

1220515132015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10613175089.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 1220515132015 in words is "one trillion, two hundred twenty billion, five hundred fifteen million, one hundred thirty-two thousand, fifteen".