23211112117 has 2 divisors, whose sum is σ = 23211112118. Its totient is φ = 23211112116.

The previous prime is 23211112087. The next prime is 23211112123. The reversal of 23211112117 is 71121111232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21623408401 + 1587703716 = 147049^2 + 39846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23211112117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211112417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605556058 + 11605556059.

It is an arithmetic number, because the mean of its divisors is an integer number (11605556059).

Almost surely, 2^23211112117 is an apocalyptic number.

It is an amenable number.

23211112117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211112117 is an equidigital number, since it uses as much as digits as its factorization.

23211112117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 22.

Adding to 23211112117 its reverse (71121111232), we get a palindrome (94332223349).

The spelling of 23211112117 in words is "twenty-three billion, two hundred eleven million, one hundred twelve thousand, one hundred seventeen".