121013215 has 8 divisors (see below), whose sum is σ = 146325168. Its totient is φ = 96071040.

The previous prime is 121013197. The next prime is 121013219. The reversal of 121013215 is 512310121.

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

It is not a de Polignac number, because 121013215 - 2⁵ = 121013183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91722 + ... + 93031.

It is an arithmetic number, because the mean of its divisors is an integer number (18290646).

Almost surely, 2^121013215 is an apocalyptic number.

121013215 is a deficient number, since it is larger than the sum of its proper divisors (25311953).

121013215 is a wasteful number, since it uses less digits than its factorization.

121013215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184889.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121013215 is about 11000.6006654182. The cubic root of 121013215 is about 494.6267498803.

Adding to 121013215 its reverse (512310121), we get a palindrome (633323336).

The spelling of 121013215 in words is "one hundred twenty-one million, thirteen thousand, two hundred fifteen".