121858497 has 12 divisors (see below), whose sum is σ = 176177664. Its totient is φ = 81165240.

The previous prime is 121858483. The next prime is 121858511. The reversal of 121858497 is 794858121.

It is an interprime number because it is at equal distance from previous prime (121858483) and next prime (121858511).

It is not a de Polignac number, because 121858497 - 2⁶ = 121858433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121858417) 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 11 ways as a sum of consecutive naturals, for example, 5472 + ... + 16542.

It is an arithmetic number, because the mean of its divisors is an integer number (14681472).

Almost surely, 2^121858497 is an apocalyptic number.

It is an amenable number.

121858497 is a deficient number, since it is larger than the sum of its proper divisors (54319167).

121858497 is a wasteful number, since it uses less digits than its factorization.

121858497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300 (or 12297 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 121858497 is about 11038.9536188898. The cubic root of 121858497 is about 495.7757411127.

The spelling of 121858497 in words is "one hundred twenty-one million, eight hundred fifty-eight thousand, four hundred ninety-seven".