121197 has 8 divisors (see below), whose sum is σ = 164160. Its totient is φ = 79520.

The previous prime is 121189. The next prime is 121229. The reversal of 121197 is 791121.

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

It is not a de Polignac number, because 121197 - 2³ = 121189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72 + ... + 497.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2¹²¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

121197 is a deficient number, since it is larger than the sum of its proper divisors (42963).

121197 is an equidigital number, since it uses as much as digits as its factorization.

121197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its digits is 126, while the sum is 21.

The square root of 121197 is about 348.1335950465. The cubic root of 121197 is about 49.4877022812.

The spelling of 121197 in words is "one hundred twenty-one thousand, one hundred ninety-seven".