111011121223 has 2 divisors, whose sum is σ = 111011121224. Its totient is φ = 111011121222.

The previous prime is 111011121197. The next prime is 111011121317. The reversal of 111011121223 is 322121110111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111011121223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111011121197 and 111011121206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011124223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505560611 + 55505560612.

It is an arithmetic number, because the mean of its divisors is an integer number (55505560612).

Almost surely, 2^111011121223 is an apocalyptic number.

111011121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011121223 is an equidigital number, since it uses as much as digits as its factorization.

111011121223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111011121223 its reverse (322121110111), we get a palindrome (433132231334).

The spelling of 111011121223 in words is "one hundred eleven billion, eleven million, one hundred twenty-one thousand, two hundred twenty-three".