121332515 has 4 divisors (see below), whose sum is σ = 145599024. Its totient is φ = 97066008.

The previous prime is 121332503. The next prime is 121332551. The reversal of 121332515 is 515233121.

It is a happy number.

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 121332515 - 2¹² = 121328419 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, 12133247 + ... + 12133256.

It is an arithmetic number, because the mean of its divisors is an integer number (36399756).

Almost surely, 2^121332515 is an apocalyptic number.

121332515 is a deficient number, since it is larger than the sum of its proper divisors (24266509).

121332515 is an equidigital number, since it uses as much as digits as its factorization.

121332515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24266508.

The product of its digits is 900, while the sum is 23.

The square root of 121332515 is about 11015.1039486698. The cubic root of 121332515 is about 495.0614010831.

Adding to 121332515 its reverse (515233121), we get a palindrome (636565636).

The spelling of 121332515 in words is "one hundred twenty-one million, three hundred thirty-two thousand, five hundred fifteen".