121563263 has 2 divisors, whose sum is σ = 121563264. Its totient is φ = 121563262.

The previous prime is 121563229. The next prime is 121563269. The reversal of 121563263 is 362365121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121563263 - 2¹⁰ = 121562239 is a prime.

It is a super-2 number, since 2×121563263² = 29555253822414338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121563269) 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, 60781631 + 60781632.

It is an arithmetic number, because the mean of its divisors is an integer number (60781632).

Almost surely, 2^121563263 is an apocalyptic number.

121563263 is a deficient number, since it is larger than the sum of its proper divisors (1).

121563263 is an equidigital number, since it uses as much as digits as its factorization.

121563263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 121563263 is about 11025.5731370301. The cubic root of 121563263 is about 495.3750353090.

The spelling of 121563263 in words is "one hundred twenty-one million, five hundred sixty-three thousand, two hundred sixty-three".