121533453323 has 2 divisors, whose sum is σ = 121533453324. Its totient is φ = 121533453322.

The previous prime is 121533453289. The next prime is 121533453331. The reversal of 121533453323 is 323354335121.

It is a strong prime.

It is an emirp because it is prime and its reverse (323354335121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121533453323 is a prime.

It is a super-2 number, since 2×121533453323² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121533453343) 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, 60766726661 + 60766726662.

It is an arithmetic number, because the mean of its divisors is an integer number (60766726662).

Almost surely, 2^121533453323 is an apocalyptic number.

121533453323 is a deficient number, since it is larger than the sum of its proper divisors (1).

121533453323 is an equidigital number, since it uses as much as digits as its factorization.

121533453323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 35.

Adding to 121533453323 its reverse (323354335121), we get a palindrome (444887788444).

The spelling of 121533453323 in words is "one hundred twenty-one billion, five hundred thirty-three million, four hundred fifty-three thousand, three hundred twenty-three".