123113213321 has 16 divisors (see below), whose sum is σ = 141542400000. Its totient is φ = 104895295488.

The previous prime is 123113213303. The next prime is 123113213329. The reversal of 123113213321 is 123312311321.

It is a cyclic number.

It is not a de Polignac number, because 123113213321 - 2²⁶ = 123046104457 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 (123113213329) 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, 1692305 + ... + 1763553.

It is an arithmetic number, because the mean of its divisors is an integer number (8846400000).

Almost surely, 2^123113213321 is an apocalyptic number.

It is an amenable number.

123113213321 is a deficient number, since it is larger than the sum of its proper divisors (18429186679).

123113213321 is a wasteful number, since it uses less digits than its factorization.

123113213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72728.

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

Adding to 123113213321 its reverse (123312311321), we get a palindrome (246425524642).

The spelling of 123113213321 in words is "one hundred twenty-three billion, one hundred thirteen million, two hundred thirteen thousand, three hundred twenty-one".