121769771 has 2 divisors, whose sum is σ = 121769772. Its totient is φ = 121769770.

The previous prime is 121769737. The next prime is 121769773. The reversal of 121769771 is 177967121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121769771 - 2⁶ = 121769707 is a prime.

Together with 121769773, 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 (121769773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60884885 + 60884886.

It is an arithmetic number, because the mean of its divisors is an integer number (60884886).

Almost surely, 2^121769771 is an apocalyptic number.

121769771 is a deficient number, since it is larger than the sum of its proper divisors (1).

121769771 is an equidigital number, since it uses as much as digits as its factorization.

121769771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 41.

The square root of 121769771 is about 11034.9341185165. The cubic root of 121769771 is about 495.6553860018.

The spelling of 121769771 in words is "one hundred twenty-one million, seven hundred sixty-nine thousand, seven hundred seventy-one".