121697 has 2 divisors, whose sum is σ = 121698.
Its totient is φ = 121696.
The previous prime is 121687. The next prime is 121711. The reversal of 121697 is 796121.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 108241 + 13456 = 329^2 + 116^2
It is an emirp because it is prime and its reverse (796121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 121697 - 26 = 121633 is a prime.
It is a Chen prime.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121697.
It is not a weakly prime, because it can be changed into another prime (121607) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60848 + 60849.
It is an arithmetic number, because the mean of its divisors is an integer number (60849).
2121697 is an apocalyptic number.
It is an amenable number.
121697 is a deficient number, since it is larger than the sum of its proper divisors (1).
121697 is an equidigital number, since it uses as much as digits as its factorization.
121697 is an evil number, because the sum of its binary digits is even.
The product of its digits is 756, while the sum is 26.
The square root of 121697 is about 348.8509710464.
The cubic root of 121697 is about 49.5556629895.
Note that the first 3 decimals are identical.
It can be divided in two parts, 121 and 697, that added together give a palindrome (818).
The spelling of 121697 in words is "one hundred twenty-one thousand, six hundred ninety-seven".