11221222223 has 4 divisors (see below), whose sum is σ = 11459971680. Its totient is φ = 10982472768.

The previous prime is 11221222189. The next prime is 11221222231. The reversal of 11221222223 is 32222212211.

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 11221222223 - 2²² = 11217027919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221222195 and 11221222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221222253) 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, 119374658 + ... + 119374751.

It is an arithmetic number, because the mean of its divisors is an integer number (2864992920).

Almost surely, 2^11221222223 is an apocalyptic number.

11221222223 is a deficient number, since it is larger than the sum of its proper divisors (238749457).

11221222223 is an equidigital number, since it uses as much as digits as its factorization.

11221222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238749456.

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

Adding to 11221222223 its reverse (32222212211), we get a palindrome (43443434434).

The spelling of 11221222223 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-three".