123204101 has 2 divisors, whose sum is σ = 123204102. Its totient is φ = 123204100.

The previous prime is 123204047. The next prime is 123204127. The reversal of 123204101 is 101402321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92179201 + 31024900 = 9601^2 + 5570^2 .

It is an emirp because it is prime and its reverse (101402321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123204101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123204131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61602050 + 61602051.

It is an arithmetic number, because the mean of its divisors is an integer number (61602051).

Almost surely, 2^123204101 is an apocalyptic number.

It is an amenable number.

123204101 is a deficient number, since it is larger than the sum of its proper divisors (1).

123204101 is an equidigital number, since it uses as much as digits as its factorization.

123204101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123204101 is about 11099.7342760987. The cubic root of 123204101 is about 497.5939080154.

Adding to 123204101 its reverse (101402321), we get a palindrome (224606422).

The spelling of 123204101 in words is "one hundred twenty-three million, two hundred four thousand, one hundred one".