121997351 has 8 divisors (see below), whose sum is σ = 140232864. Its totient is φ = 103963680.

The previous prime is 121997339. The next prime is 121997353. The reversal of 121997351 is 153799121.

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 121997351 - 2²⁶ = 54888487 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 (121997353) 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, 49160 + ... + 51581.

It is an arithmetic number, because the mean of its divisors is an integer number (17529108).

Almost surely, 2^121997351 is an apocalyptic number.

121997351 is a deficient number, since it is larger than the sum of its proper divisors (18235513).

121997351 is a wasteful number, since it uses less digits than its factorization.

121997351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100921.

The product of its digits is 17010, while the sum is 38.

The square root of 121997351 is about 11045.2411019407. The cubic root of 121997351 is about 495.9639766914.

The spelling of 121997351 in words is "one hundred twenty-one million, nine hundred ninety-seven thousand, three hundred fifty-one".