11222111222123 has 4 divisors (see below), whose sum is σ = 11609080574640. Its totient is φ = 10835141869608.

The previous prime is 11222111222089. The next prime is 11222111222159. The reversal of 11222111222123 is 32122211122211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222111222123 - 2¹² = 11222111218027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222111222183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193484676215 + ... + 193484676272.

It is an arithmetic number, because the mean of its divisors is an integer number (2902270143660).

Almost surely, 2^{11222111222123} is an apocalyptic number.

11222111222123 is a deficient number, since it is larger than the sum of its proper divisors (386969352517).

11222111222123 is an equidigital number, since it uses as much as digits as its factorization.

11222111222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386969352516.

The product of its digits is 384, while the sum is 23.

Adding to 11222111222123 its reverse (32122211122211), we get a palindrome (43344322344334).

The spelling of 11222111222123 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-three".