121317277 has 2 divisors, whose sum is σ = 121317278. Its totient is φ = 121317276.

The previous prime is 121317257. The next prime is 121317283. The reversal of 121317277 is 772713121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107619876 + 13697401 = 10374^2 + 3701^2 .

It is a cyclic number.

It is not a de Polignac number, because 121317277 - 2¹⁵ = 121284509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121317257) 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, 60658638 + 60658639.

It is an arithmetic number, because the mean of its divisors is an integer number (60658639).

Almost surely, 2^121317277 is an apocalyptic number.

It is an amenable number.

121317277 is a deficient number, since it is larger than the sum of its proper divisors (1).

121317277 is an equidigital number, since it uses as much as digits as its factorization.

121317277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4116, while the sum is 31.

The square root of 121317277 is about 11014.4122403331. The cubic root of 121317277 is about 495.0406754998.

The spelling of 121317277 in words is "one hundred twenty-one million, three hundred seventeen thousand, two hundred seventy-seven".