123221313123 has 8 divisors (see below), whose sum is σ = 164387236608. Its totient is φ = 82101465864.

The previous prime is 123221313109. The next prime is 123221313179. The reversal of 123221313123 is 321313122321.

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

It is not a de Polignac number, because 123221313123 - 2¹³ = 123221304931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123221313093 and 123221313102.

It is not an unprimeable number, because it can be changed into a prime (123221313923) 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, 11512815 + ... + 11523512.

It is an arithmetic number, because the mean of its divisors is an integer number (20548404576).

Almost surely, 2^123221313123 is an apocalyptic number.

123221313123 is a deficient number, since it is larger than the sum of its proper divisors (41165923485).

123221313123 is a wasteful number, since it uses less digits than its factorization.

123221313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23038113.

The product of its digits is 1296, while the sum is 24.

Adding to 123221313123 its reverse (321313122321), we get a palindrome (444534435444).

The spelling of 123221313123 in words is "one hundred twenty-three billion, two hundred twenty-one million, three hundred thirteen thousand, one hundred twenty-three".