11222122123 has 6 divisors (see below), whose sum is σ = 11235078884. Its totient is φ = 11209180224.

The previous prime is 11222122117. The next prime is 11222122151. The reversal of 11222122123 is 32122122211.

It is a de Polignac number, because none of the positive numbers 2^k-11222122123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222122123.

It is not an unprimeable number, because it can be changed into a prime (11222122103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856540 + ... + 869542.

Almost surely, 2^11222122123 is an apocalyptic number.

11222122123 is a deficient number, since it is larger than the sum of its proper divisors (12956761).

11222122123 is an frugal number, since it uses more digits than its factorization.

11222122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14861 (or 13932 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

Adding to 11222122123 its reverse (32122122211), we get a palindrome (43344244334).

The spelling of 11222122123 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-three".