121452215 has 4 divisors (see below), whose sum is σ = 145742664. Its totient is φ = 97161768.

The previous prime is 121452181. The next prime is 121452229. The reversal of 121452215 is 512254121.

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 121452215 - 2⁸ = 121451959 is a prime.

It is a Duffinian number.

It is a congruent 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, 12145217 + ... + 12145226.

It is an arithmetic number, because the mean of its divisors is an integer number (36435666).

Almost surely, 2^121452215 is an apocalyptic number.

121452215 is a deficient number, since it is larger than the sum of its proper divisors (24290449).

121452215 is an equidigital number, since it uses as much as digits as its factorization.

121452215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24290448.

The product of its digits is 800, while the sum is 23.

The square root of 121452215 is about 11020.5360577424. The cubic root of 121452215 is about 495.2241477116.

The spelling of 121452215 in words is "one hundred twenty-one million, four hundred fifty-two thousand, two hundred fifteen".