121336505263 has 2 divisors, whose sum is σ = 121336505264. Its totient is φ = 121336505262.

The previous prime is 121336505239. The next prime is 121336505281. The reversal of 121336505263 is 362505633121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121336505263 - 2¹⁷ = 121336374191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121336505233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60668252631 + 60668252632.

It is an arithmetic number, because the mean of its divisors is an integer number (60668252632).

Almost surely, 2^121336505263 is an apocalyptic number.

121336505263 is a deficient number, since it is larger than the sum of its proper divisors (1).

121336505263 is an equidigital number, since it uses as much as digits as its factorization.

121336505263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 121336505263 in words is "one hundred twenty-one billion, three hundred thirty-six million, five hundred five thousand, two hundred sixty-three".