12111222010123 has 2 divisors, whose sum is σ = 12111222010124. Its totient is φ = 12111222010122.

The previous prime is 12111222010073. The next prime is 12111222010141. The reversal of 12111222010123 is 32101022211121.

12111222010123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (32101022211121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12111222010123 - 2¹⁷ = 12111221879051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111222010123.

It is not a weakly prime, because it can be changed into another prime (12111222010523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055611005061 + 6055611005062.

It is an arithmetic number, because the mean of its divisors is an integer number (6055611005062).

Almost surely, 2^{12111222010123} is an apocalyptic number.

12111222010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111222010123 is an equidigital number, since it uses as much as digits as its factorization.

12111222010123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12111222010123 its reverse (32101022211121), we get a palindrome (44212244221244).

The spelling of 12111222010123 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, ten thousand, one hundred twenty-three".