121170217 has 8 divisors (see below), whose sum is σ = 140750912. Its totient is φ = 102157200.

The previous prime is 121170199. The next prime is 121170223. The reversal of 121170217 is 712071121.

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

It is a cyclic number.

It is not a de Polignac number, because 121170217 - 2¹⁵ = 121137449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121170017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141459 + ... + 142312.

It is an arithmetic number, because the mean of its divisors is an integer number (17593864).

Almost surely, 2^121170217 is an apocalyptic number.

It is an amenable number.

121170217 is a deficient number, since it is larger than the sum of its proper divisors (19580695).

121170217 is an equidigital number, since it uses as much as digits as its factorization.

121170217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283839.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 121170217 is about 11007.7344172177. The cubic root of 121170217 is about 494.8405662778.

The spelling of 121170217 in words is "one hundred twenty-one million, one hundred seventy thousand, two hundred seventeen".