111023101243 has 2 divisors, whose sum is σ = 111023101244. Its totient is φ = 111023101242.

The previous prime is 111023101207. The next prime is 111023101289. The reversal of 111023101243 is 342101320111.

It is a weak prime.

It is an emirp because it is prime and its reverse (342101320111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111023101243 - 2¹⁷ = 111022970171 is a prime.

It is a super-2 number, since 2×111023101243² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111023101243.

It is not a weakly prime, because it can be changed into another prime (111023101043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511550621 + 55511550622.

It is an arithmetic number, because the mean of its divisors is an integer number (55511550622).

Almost surely, 2^111023101243 is an apocalyptic number.

111023101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

111023101243 is an equidigital number, since it uses as much as digits as its factorization.

111023101243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111023101243 its reverse (342101320111), we get a palindrome (453124421354).

The spelling of 111023101243 in words is "one hundred eleven billion, twenty-three million, one hundred one thousand, two hundred forty-three".