123221230117 has 2 divisors, whose sum is σ = 123221230118. Its totient is φ = 123221230116.

The previous prime is 123221229983. The next prime is 123221230151. The reversal of 123221230117 is 711032122321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112842918241 + 10378311876 = 335921^2 + 101874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123221230117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123221230091 and 123221230100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123221233117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610615058 + 61610615059.

It is an arithmetic number, because the mean of its divisors is an integer number (61610615059).

Almost surely, 2^123221230117 is an apocalyptic number.

It is an amenable number.

123221230117 is a deficient number, since it is larger than the sum of its proper divisors (1).

123221230117 is an equidigital number, since it uses as much as digits as its factorization.

123221230117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 123221230117 its reverse (711032122321), we get a palindrome (834253352438).

The spelling of 123221230117 in words is "one hundred twenty-three billion, two hundred twenty-one million, two hundred thirty thousand, one hundred seventeen".