121655627 has 2 divisors, whose sum is σ = 121655628. Its totient is φ = 121655626.

The previous prime is 121655549. The next prime is 121655629. The reversal of 121655627 is 726556121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121655627 is a prime.

Together with 121655629, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121655629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60827813 + 60827814.

It is an arithmetic number, because the mean of its divisors is an integer number (60827814).

Almost surely, 2^121655627 is an apocalyptic number.

121655627 is a deficient number, since it is larger than the sum of its proper divisors (1).

121655627 is an equidigital number, since it uses as much as digits as its factorization.

121655627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 121655627 is about 11029.7609674915. The cubic root of 121655627 is about 495.5004658471.

The spelling of 121655627 in words is "one hundred twenty-one million, six hundred fifty-five thousand, six hundred twenty-seven".