623301066121 has 2 divisors, whose sum is σ = 623301066122. Its totient is φ = 623301066120.

The previous prime is 623301066103. The next prime is 623301066131. The reversal of 623301066121 is 121660103326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412446528400 + 210854537721 = 642220^2 + 459189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623301066121 is a prime.

It is not a weakly prime, because it can be changed into another prime (623301066131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311650533060 + 311650533061.

It is an arithmetic number, because the mean of its divisors is an integer number (311650533061).

Almost surely, 2^623301066121 is an apocalyptic number.

It is an amenable number.

623301066121 is a deficient number, since it is larger than the sum of its proper divisors (1).

623301066121 is an equidigital number, since it uses as much as digits as its factorization.

623301066121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 623301066121 its reverse (121660103326), we get a palindrome (744961169447).

The spelling of 623301066121 in words is "six hundred twenty-three billion, three hundred one million, sixty-six thousand, one hundred twenty-one".