2111223223 has 4 divisors (see below), whose sum is σ = 2111380960. Its totient is φ = 2111065488.

The previous prime is 2111223203. The next prime is 2111223271. The reversal of 2111223223 is 3223221112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111223223 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 2111223223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111223203) 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, 56718 + ... + 86251.

It is an arithmetic number, because the mean of its divisors is an integer number (527845240).

Almost surely, 2^2111223223 is an apocalyptic number.

2111223223 is a deficient number, since it is larger than the sum of its proper divisors (157737).

2111223223 is a wasteful number, since it uses less digits than its factorization.

2111223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157736.

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

The square root of 2111223223 is about 45948.0491751282. The cubic root of 2111223223 is about 1282.8564185884.

Adding to 2111223223 its reverse (3223221112), we get a palindrome (5334444335).

The spelling of 2111223223 in words is "two billion, one hundred eleven million, two hundred twenty-three thousand, two hundred twenty-three".