221011122223 has 4 divisors (see below), whose sum is σ = 221061095248. Its totient is φ = 220961149200.

The previous prime is 221011122217. The next prime is 221011122281. The reversal of 221011122223 is 322221110122.

221011122223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221011122223 - 2⁹ = 221011121711 is a prime.

It is a super-2 number, since 2×221011122223² (a number of 23 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 221011122223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011122323) 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, 24979878 + ... + 24988723.

It is an arithmetic number, because the mean of its divisors is an integer number (55265273812).

Almost surely, 2^221011122223 is an apocalyptic number.

221011122223 is a deficient number, since it is larger than the sum of its proper divisors (49973025).

221011122223 is an equidigital number, since it uses as much as digits as its factorization.

221011122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49973024.

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

Adding to 221011122223 its reverse (322221110122), we get a palindrome (543232232345).

The spelling of 221011122223 in words is "two hundred twenty-one billion, eleven million, one hundred twenty-two thousand, two hundred twenty-three".