121339697 has 4 divisors (see below), whose sum is σ = 126615360. Its totient is φ = 116064036.

The previous prime is 121339649. The next prime is 121339703. The reversal of 121339697 is 796933121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121339697 - 2¹² = 121335601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121339607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637797 + ... + 2637842.

It is an arithmetic number, because the mean of its divisors is an integer number (31653840).

Almost surely, 2^121339697 is an apocalyptic number.

It is an amenable number.

121339697 is a deficient number, since it is larger than the sum of its proper divisors (5275663).

121339697 is an equidigital number, since it uses as much as digits as its factorization.

121339697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275662.

The product of its digits is 61236, while the sum is 41.

The square root of 121339697 is about 11015.4299507554. The cubic root of 121339697 is about 495.0711688985.

The spelling of 121339697 in words is "one hundred twenty-one million, three hundred thirty-nine thousand, six hundred ninety-seven".