121683451 has 2 divisors, whose sum is σ = 121683452. Its totient is φ = 121683450.

The previous prime is 121683439. The next prime is 121683473. The reversal of 121683451 is 154386121.

It is a weak prime.

It is an emirp because it is prime and its reverse (154386121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121683451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121683431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60841725 + 60841726.

It is an arithmetic number, because the mean of its divisors is an integer number (60841726).

Almost surely, 2^121683451 is an apocalyptic number.

121683451 is a deficient number, since it is larger than the sum of its proper divisors (1).

121683451 is an equidigital number, since it uses as much as digits as its factorization.

121683451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 121683451 is about 11031.0222101127. The cubic root of 121683451 is about 495.5382384636.

The spelling of 121683451 in words is "one hundred twenty-one million, six hundred eighty-three thousand, four hundred fifty-one".