121225311200515 has 16 divisors (see below), whose sum is σ = 147864376520640. Its totient is φ = 95384445678720.

The previous prime is 121225311200509. The next prime is 121225311200527. The reversal of 121225311200515 is 515002113522121.

It is not a de Polignac number, because 121225311200515 - 2²¹ = 121225309103363 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 7533060 + ... + 17297329.

It is an arithmetic number, because the mean of its divisors is an integer number (9241523532540).

Almost surely, 2^{121225311200515} is an apocalyptic number.

121225311200515 is a deficient number, since it is larger than the sum of its proper divisors (26639065320125).

121225311200515 is a wasteful number, since it uses less digits than its factorization.

121225311200515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846462.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 121225311200515 its reverse (515002113522121), we get a palindrome (636227424722636).

The spelling of 121225311200515 in words is "one hundred twenty-one trillion, two hundred twenty-five billion, three hundred eleven million, two hundred thousand, five hundred fifteen".