121265057 has 2 divisors, whose sum is σ = 121265058. Its totient is φ = 121265056.

The previous prime is 121265047. The next prime is 121265059. The reversal of 121265057 is 750562121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100480576 + 20784481 = 10024^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 121265057 - 2⁴ = 121265041 is a prime.

Together with 121265059, 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 (121265059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60632528 + 60632529.

It is an arithmetic number, because the mean of its divisors is an integer number (60632529).

Almost surely, 2^121265057 is an apocalyptic number.

It is an amenable number.

121265057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121265057 is an equidigital number, since it uses as much as digits as its factorization.

121265057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 121265057 is about 11012.0414546986. The cubic root of 121265057 is about 494.9696366098.

The spelling of 121265057 in words is "one hundred twenty-one million, two hundred sixty-five thousand, fifty-seven".