121516013 has 8 divisors (see below), whose sum is σ = 122803200. Its totient is φ = 120234240.

The previous prime is 121515997. The next prime is 121516027. The reversal of 121516013 is 310615121.

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

It is a cyclic number.

It is not a de Polignac number, because 121516013 - 2⁴ = 121515997 is a prime.

It is a super-2 number, since 2×121516013² = 29532282830832338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121516093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55958 + ... + 58088.

It is an arithmetic number, because the mean of its divisors is an integer number (15350400).

Almost surely, 2^121516013 is an apocalyptic number.

It is an amenable number.

121516013 is a deficient number, since it is larger than the sum of its proper divisors (1287187).

121516013 is a wasteful number, since it uses less digits than its factorization.

121516013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 121516013 is about 11023.4301830238. The cubic root of 121516013 is about 495.3108451278.

The spelling of 121516013 in words is "one hundred twenty-one million, five hundred sixteen thousand, thirteen".