121507273 has 2 divisors, whose sum is σ = 121507274. Its totient is φ = 121507272.

The previous prime is 121507249. The next prime is 121507277. The reversal of 121507273 is 372705121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76510009 + 44997264 = 8747^2 + 6708^2 .

It is a cyclic number.

It is not a de Polignac number, because 121507273 - 2⁵ = 121507241 is a prime.

It is not a weakly prime, because it can be changed into another prime (121507277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60753636 + 60753637.

It is an arithmetic number, because the mean of its divisors is an integer number (60753637).

Almost surely, 2^121507273 is an apocalyptic number.

It is an amenable number.

121507273 is a deficient number, since it is larger than the sum of its proper divisors (1).

121507273 is an equidigital number, since it uses as much as digits as its factorization.

121507273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 121507273 is about 11023.0337475670. The cubic root of 121507273 is about 495.2989698189.

The spelling of 121507273 in words is "one hundred twenty-one million, five hundred seven thousand, two hundred seventy-three".