111216022123 has 2 divisors, whose sum is σ = 111216022124. Its totient is φ = 111216022122.

The previous prime is 111216022103. The next prime is 111216022157. The reversal of 111216022123 is 321220612111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111216022123 - 2⁵ = 111216022091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111216022094 and 111216022103.

It is not a weakly prime, because it can be changed into another prime (111216022103) 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, 55608011061 + 55608011062.

It is an arithmetic number, because the mean of its divisors is an integer number (55608011062).

Almost surely, 2^111216022123 is an apocalyptic number.

111216022123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111216022123 is an equidigital number, since it uses as much as digits as its factorization.

111216022123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 111216022123 its reverse (321220612111), we get a palindrome (432436634234).

The spelling of 111216022123 in words is "one hundred eleven billion, two hundred sixteen million, twenty-two thousand, one hundred twenty-three".