121361263 has 2 divisors, whose sum is σ = 121361264. Its totient is φ = 121361262.

The previous prime is 121361257. The next prime is 121361281. The reversal of 121361263 is 362163121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121361263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121361213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60680631 + 60680632.

It is an arithmetic number, because the mean of its divisors is an integer number (60680632).

Almost surely, 2^121361263 is an apocalyptic number.

121361263 is a deficient number, since it is larger than the sum of its proper divisors (1).

121361263 is an equidigital number, since it uses as much as digits as its factorization.

121361263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 121361263 is about 11016.4088068662. The cubic root of 121361263 is about 495.1004972295.

The spelling of 121361263 in words is "one hundred twenty-one million, three hundred sixty-one thousand, two hundred sixty-three".