121323121313 has 8 divisors (see below), whose sum is σ = 121613407968. Its totient is φ = 121032909504.

The previous prime is 121323121301. The next prime is 121323121319. The reversal of 121323121313 is 313121323121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121323121313 - 2¹² = 121323117217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121323121319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4524281 + ... + 4551017.

It is an arithmetic number, because the mean of its divisors is an integer number (15201675996).

Almost surely, 2^121323121313 is an apocalyptic number.

It is an amenable number.

121323121313 is a deficient number, since it is larger than the sum of its proper divisors (290286655).

121323121313 is a wasteful number, since it uses less digits than its factorization.

121323121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37423.

The product of its digits is 648, while the sum is 23.

Adding to 121323121313 its reverse (313121323121), we get a palindrome (434444444434).

The spelling of 121323121313 in words is "one hundred twenty-one billion, three hundred twenty-three million, one hundred twenty-one thousand, three hundred thirteen".