11222123113 has 4 divisors (see below), whose sum is σ = 11882248020. Its totient is φ = 10561998208.

The previous prime is 11222123111. The next prime is 11222123117. The reversal of 11222123113 is 31132122211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31132122211 = 7757 ⋅4013423.

It can be written as a sum of positive squares in 2 ways, for example, as 8686799209 + 2535323904 = 93203^2 + 50352^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222123113 - 2¹ = 11222123111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222123111) 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, 330062428 + ... + 330062461.

It is an arithmetic number, because the mean of its divisors is an integer number (2970562005).

Almost surely, 2^11222123113 is an apocalyptic number.

It is an amenable number.

11222123113 is a deficient number, since it is larger than the sum of its proper divisors (660124907).

11222123113 is an equidigital number, since it uses as much as digits as its factorization.

11222123113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660124906.

The product of its digits is 144, while the sum is 19.

Adding to 11222123113 its reverse (31132122211), we get a palindrome (42354245324).

The spelling of 11222123113 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-three thousand, one hundred thirteen".