121613315 has 4 divisors (see below), whose sum is σ = 145935984. Its totient is φ = 97290648.

The previous prime is 121613309. The next prime is 121613363. The reversal of 121613315 is 513316121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121613315 - 2⁸ = 121613059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12161327 + ... + 12161336.

It is an arithmetic number, because the mean of its divisors is an integer number (36483996).

Almost surely, 2^121613315 is an apocalyptic number.

121613315 is a deficient number, since it is larger than the sum of its proper divisors (24322669).

121613315 is an equidigital number, since it uses as much as digits as its factorization.

121613315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24322668.

The product of its digits is 540, while the sum is 23.

The square root of 121613315 is about 11027.8427174130. The cubic root of 121613315 is about 495.4430139305.

Adding to 121613315 its reverse (513316121), we get a palindrome (634929436).

The spelling of 121613315 in words is "one hundred twenty-one million, six hundred thirteen thousand, three hundred fifteen".