121253261 has 2 divisors, whose sum is σ = 121253262. Its totient is φ = 121253260.

The previous prime is 121253233. The next prime is 121253267. The reversal of 121253261 is 162352121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117050761 + 4202500 = 10819^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 121253261 - 2²⁶ = 54144397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121253267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60626630 + 60626631.

It is an arithmetic number, because the mean of its divisors is an integer number (60626631).

Almost surely, 2^121253261 is an apocalyptic number.

It is an amenable number.

121253261 is a deficient number, since it is larger than the sum of its proper divisors (1).

121253261 is an equidigital number, since it uses as much as digits as its factorization.

121253261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 121253261 is about 11011.5058461593. The cubic root of 121253261 is about 494.9535867784.

The spelling of 121253261 in words is "one hundred twenty-one million, two hundred fifty-three thousand, two hundred sixty-one".