11112121101223 has 2 divisors, whose sum is σ = 11112121101224. Its totient is φ = 11112121101222.

The previous prime is 11112121101199. The next prime is 11112121101269. The reversal of 11112121101223 is 32210112121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11112121101223 - 2³³ = 11103531166631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11112121101223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112121401223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060550611 + 5556060550612.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060550612).

Almost surely, 2^{11112121101223} is an apocalyptic number.

11112121101223 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121101223 is an equidigital number, since it uses as much as digits as its factorization.

11112121101223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11112121101223 its reverse (32210112121111), we get a palindrome (43322233222334).

The spelling of 11112121101223 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-three".