121317533 has 2 divisors, whose sum is σ = 121317534. Its totient is φ = 121317532.

The previous prime is 121317523. The next prime is 121317541. The reversal of 121317533 is 335713121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121044004 + 273529 = 11002^2 + 523^2 .

It is an emirp because it is prime and its reverse (335713121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121317533 - 2⁴ = 121317517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121317523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60658766 + 60658767.

It is an arithmetic number, because the mean of its divisors is an integer number (60658767).

Almost surely, 2^121317533 is an apocalyptic number.

It is an amenable number.

121317533 is a deficient number, since it is larger than the sum of its proper divisors (1).

121317533 is an equidigital number, since it uses as much as digits as its factorization.

121317533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 26.

The square root of 121317533 is about 11014.4238614646. The cubic root of 121317533 is about 495.0410237061.

The spelling of 121317533 in words is "one hundred twenty-one million, three hundred seventeen thousand, five hundred thirty-three".