121286771 has 2 divisors, whose sum is σ = 121286772. Its totient is φ = 121286770.

The previous prime is 121286749. The next prime is 121286773. The reversal of 121286771 is 177682121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121286771 - 2⁶ = 121286707 is a prime.

Together with 121286773, 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 (121286773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60643385 + 60643386.

It is an arithmetic number, because the mean of its divisors is an integer number (60643386).

Almost surely, 2^121286771 is an apocalyptic number.

121286771 is a deficient number, since it is larger than the sum of its proper divisors (1).

121286771 is an equidigital number, since it uses as much as digits as its factorization.

121286771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 35.

The square root of 121286771 is about 11013.0273313018. The cubic root of 121286771 is about 494.9991783138. Note that the first 3 decimals are identical.

The spelling of 121286771 in words is "one hundred twenty-one million, two hundred eighty-six thousand, seven hundred seventy-one".