121282277 has 2 divisors, whose sum is σ = 121282278. Its totient is φ = 121282276.

The previous prime is 121282237. The next prime is 121282279. The reversal of 121282277 is 772282121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 58967041 = 7894^2 + 7679^2 .

It is a cyclic number.

It is not a de Polignac number, because 121282277 - 2¹⁶ = 121216741 is a prime.

Together with 121282279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121282279) 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, 60641138 + 60641139.

It is an arithmetic number, because the mean of its divisors is an integer number (60641139).

Almost surely, 2^121282277 is an apocalyptic number.

It is an amenable number.

121282277 is a deficient number, since it is larger than the sum of its proper divisors (1).

121282277 is an equidigital number, since it uses as much as digits as its factorization.

121282277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6272, while the sum is 32.

The square root of 121282277 is about 11012.8232983191. The cubic root of 121282277 is about 494.9930645561.

The spelling of 121282277 in words is "one hundred twenty-one million, two hundred eighty-two thousand, two hundred seventy-seven".