11021223223 has 4 divisors (see below), whose sum is σ = 11185719160. Its totient is φ = 10856727288.

The previous prime is 11021223221. The next prime is 11021223247. The reversal of 11021223223 is 32232212011.

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 11021223223 - 2¹ = 11021223221 is a prime.

It is a super-2 number, since 2×11021223223² (a number of 21 digits) contains 22 as substring.

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 11021223223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021223221) 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, 82247868 + ... + 82248001.

It is an arithmetic number, because the mean of its divisors is an integer number (2796429790).

Almost surely, 2^11021223223 is an apocalyptic number.

11021223223 is a deficient number, since it is larger than the sum of its proper divisors (164495937).

11021223223 is an equidigital number, since it uses as much as digits as its factorization.

11021223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164495936.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11021223223 its reverse (32232212011), we get a palindrome (43253435234).

The spelling of 11021223223 in words is "eleven billion, twenty-one million, two hundred twenty-three thousand, two hundred twenty-three".