121306715 has 16 divisors (see below), whose sum is σ = 152195328. Its totient is φ = 92643936.

The previous prime is 121306699. The next prime is 121306727. The reversal of 121306715 is 517603121.

It is a cyclic number.

It is not a de Polignac number, because 121306715 - 2⁴ = 121306699 is a prime.

It is a Duffinian 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, 103724 + ... + 104886.

It is an arithmetic number, because the mean of its divisors is an integer number (9512208).

Almost surely, 2^121306715 is an apocalyptic number.

121306715 is a deficient number, since it is larger than the sum of its proper divisors (30888613).

121306715 is a wasteful number, since it uses less digits than its factorization.

121306715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 121306715 is about 11013.9327671818. The cubic root of 121306715 is about 495.0263088421.

Adding to 121306715 its reverse (517603121), we get a palindrome (638909836).

The spelling of 121306715 in words is "one hundred twenty-one million, three hundred six thousand, seven hundred fifteen".