123196223989 has 2 divisors, whose sum is σ = 123196223990. Its totient is φ = 123196223988.

The previous prime is 123196223981. The next prime is 123196224001. The reversal of 123196223989 is 989322691321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112986738225 + 10209485764 = 336135^2 + 101042^2 .

It is a cyclic number.

It is not a de Polignac number, because 123196223989 - 2³ = 123196223981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123196223981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61598111994 + 61598111995.

It is an arithmetic number, because the mean of its divisors is an integer number (61598111995).

Almost surely, 2^123196223989 is an apocalyptic number.

It is an amenable number.

123196223989 is a deficient number, since it is larger than the sum of its proper divisors (1).

123196223989 is an equidigital number, since it uses as much as digits as its factorization.

123196223989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 55.

The spelling of 123196223989 in words is "one hundred twenty-three billion, one hundred ninety-six million, two hundred twenty-three thousand, nine hundred eighty-nine".