121513329 has 24 divisors (see below), whose sum is σ = 201170112. Its totient is φ = 69236640.

The previous prime is 121513321. The next prime is 121513339. The reversal of 121513329 is 923315121.

121513329 is a `hidden beast` number, since 121 + 513 + 3 + 29 = 666.

It is not a de Polignac number, because 121513329 - 2³ = 121513321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121513321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20914 + ... + 26084.

It is an arithmetic number, because the mean of its divisors is an integer number (8382088).

Almost surely, 2^121513329 is an apocalyptic number.

It is an amenable number.

121513329 is a deficient number, since it is larger than the sum of its proper divisors (79656783).

121513329 is a wasteful number, since it uses less digits than its factorization.

121513329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557 (or 5554 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 121513329 is about 11023.3084416612. The cubic root of 121513329 is about 495.3071983544.

The spelling of 121513329 in words is "one hundred twenty-one million, five hundred thirteen thousand, three hundred twenty-nine".