121209297 has 8 divisors (see below), whose sum is σ = 176304480. Its totient is φ = 73460160.

The previous prime is 121209289. The next prime is 121209301. The reversal of 121209297 is 792902121.

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

It is not a de Polignac number, because 121209297 - 2³ = 121209289 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3673009 = 121209297 / (1 + 2 + 1 + 2 + 0 + 9 + 2 + 9 + 7).

It is not an unprimeable number, because it can be changed into a prime (121209247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836472 + ... + 1836537.

It is an arithmetic number, because the mean of its divisors is an integer number (22038060).

Almost surely, 2^121209297 is an apocalyptic number.

It is an amenable number.

121209297 is a deficient number, since it is larger than the sum of its proper divisors (55095183).

121209297 is a wasteful number, since it uses less digits than its factorization.

121209297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673023.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 121209297 is about 11009.5093896141. The cubic root of 121209297 is about 494.8937594666.

The spelling of 121209297 in words is "one hundred twenty-one million, two hundred nine thousand, two hundred ninety-seven".