121527215015 has 16 divisors (see below), whose sum is σ = 150097612896. Its totient is φ = 94400947200.

The previous prime is 121527215003. The next prime is 121527215129. The reversal of 121527215015 is 510512725121.

It is not a de Polignac number, because 121527215015 - 2²⁰ = 121526166439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361522 + ... + 1448031.

It is an arithmetic number, because the mean of its divisors is an integer number (9381100806).

Almost surely, 2^121527215015 is an apocalyptic number.

121527215015 is a deficient number, since it is larger than the sum of its proper divisors (28570397881).

121527215015 is a wasteful number, since it uses less digits than its factorization.

121527215015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809810.

The product of its (nonzero) digits is 7000, while the sum is 32.

The spelling of 121527215015 in words is "one hundred twenty-one billion, five hundred twenty-seven million, two hundred fifteen thousand, fifteen".