1011112111223 has 2 divisors, whose sum is σ = 1011112111224. Its totient is φ = 1011112111222.

The previous prime is 1011112111213. The next prime is 1011112111267. The reversal of 1011112111223 is 3221112111101.

It is a weak prime.

It is an emirp because it is prime and its reverse (3221112111101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011112111223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011112111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505556055611 + 505556055612.

It is an arithmetic number, because the mean of its divisors is an integer number (505556055612).

Almost surely, 2^{1011112111223} is an apocalyptic number.

1011112111223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011112111223 is an equidigital number, since it uses as much as digits as its factorization.

1011112111223 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 17.

Adding to 1011112111223 its reverse (3221112111101), we get a palindrome (4232224222324).

The spelling of 1011112111223 in words is "one trillion, eleven billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty-three".