121635341 has 2 divisors, whose sum is σ = 121635342. Its totient is φ = 121635340.

The previous prime is 121635307. The next prime is 121635343. The reversal of 121635341 is 143536121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117267241 + 4368100 = 10829^2 + 2090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121635341 is a prime.

It is a Sophie Germain prime.

Together with 121635343, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121635341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121635343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60817670 + 60817671.

It is an arithmetic number, because the mean of its divisors is an integer number (60817671).

Almost surely, 2^121635341 is an apocalyptic number.

It is an amenable number.

121635341 is a deficient number, since it is larger than the sum of its proper divisors (1).

121635341 is an equidigital number, since it uses as much as digits as its factorization.

121635341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 121635341 is about 11028.8413262681. The cubic root of 121635341 is about 495.4729228515.

The spelling of 121635341 in words is "one hundred twenty-one million, six hundred thirty-five thousand, three hundred forty-one".