121697357 has 4 divisors (see below), whose sum is σ = 121752636. Its totient is φ = 121642080.

The previous prime is 121697327. The next prime is 121697377. The reversal of 121697357 is 753796121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753796121 = 13 ⋅57984317.

It can be written as a sum of positive squares in 2 ways, for example, as 98982601 + 22714756 = 9949^2 + 4766^2 .

It is a cyclic number.

It is not a de Polignac number, because 121697357 - 2¹² = 121693261 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 (121697327) 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 3 ways as a sum of consecutive naturals, for example, 24194 + ... + 28787.

It is an arithmetic number, because the mean of its divisors is an integer number (30438159).

Almost surely, 2^121697357 is an apocalyptic number.

It is an amenable number.

121697357 is a deficient number, since it is larger than the sum of its proper divisors (55279).

121697357 is an equidigital number, since it uses as much as digits as its factorization.

121697357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55278.

The product of its digits is 79380, while the sum is 41.

The square root of 121697357 is about 11031.6525054046. The cubic root of 121697357 is about 495.5571144685.

The spelling of 121697357 in words is "one hundred twenty-one million, six hundred ninety-seven thousand, three hundred fifty-seven".