121313323323 has 16 divisors (see below), whose sum is σ = 179743549440. Its totient is φ = 80866500552.

The previous prime is 121313323319. The next prime is 121313323349. The reversal of 121313323323 is 323323313121.

121313323323 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 1 + 332 + 3 + 323 = 666.

It is not a de Polignac number, because 121313323323 - 2² = 121313323319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121313323303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011 + ... + 492572.

It is an arithmetic number, because the mean of its divisors is an integer number (11233971840).

Almost surely, 2^121313323323 is an apocalyptic number.

121313323323 is a deficient number, since it is larger than the sum of its proper divisors (58430226117).

121313323323 is an equidigital number, since it uses as much as digits as its factorization.

121313323323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502695 (or 502689 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

Adding to 121313323323 its reverse (323323313121), we get a palindrome (444636636444).

The spelling of 121313323323 in words is "one hundred twenty-one billion, three hundred thirteen million, three hundred twenty-three thousand, three hundred twenty-three".