23110121105857 has 2 divisors, whose sum is σ = 23110121105858. Its totient is φ = 23110121105856.

The previous prime is 23110121105849. The next prime is 23110121105893. The reversal of 23110121105857 is 75850112101132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17884855444401 + 5225265661456 = 4229049^2 + 2285884^2 .

It is a cyclic number.

It is not a de Polignac number, because 23110121105857 - 2³ = 23110121105849 is a prime.

It is not a weakly prime, because it can be changed into another prime (23110121105807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555060552928 + 11555060552929.

It is an arithmetic number, because the mean of its divisors is an integer number (11555060552929).

Almost surely, 2^{23110121105857} is an apocalyptic number.

It is an amenable number.

23110121105857 is a deficient number, since it is larger than the sum of its proper divisors (1).

23110121105857 is an equidigital number, since it uses as much as digits as its factorization.

23110121105857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 37.

Adding to 23110121105857 its reverse (75850112101132), we get a palindrome (98960233206989).

The spelling of 23110121105857 in words is "twenty-three trillion, one hundred ten billion, one hundred twenty-one million, one hundred five thousand, eight hundred fifty-seven".