11212222223 has 4 divisors (see below), whose sum is σ = 11212991160. Its totient is φ = 11211453288.

The previous prime is 11212222207. The next prime is 11212222243. The reversal of 11212222223 is 32222221211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32222221211 = 179 ⋅180012409.

It is a cyclic number.

It is not a de Polignac number, because 11212222223 - 2⁴ = 11212222207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212222195 and 11212222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212222243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362165 + ... + 391902.

It is an arithmetic number, because the mean of its divisors is an integer number (2803247790).

Almost surely, 2^11212222223 is an apocalyptic number.

11212222223 is a deficient number, since it is larger than the sum of its proper divisors (768937).

11212222223 is an equidigital number, since it uses as much as digits as its factorization.

11212222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768936.

The product of its digits is 384, while the sum is 20.

Adding to 11212222223 its reverse (32222221211), we get a palindrome (43434443434).

The spelling of 11212222223 in words is "eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-three".