2221020223 has 4 divisors (see below), whose sum is σ = 2222609200. Its totient is φ = 2219431248.

The previous prime is 2221020161. The next prime is 2221020227. The reversal of 2221020223 is 3220201222.

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 2221020223 - 2²¹ = 2218923071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221020197 and 2221020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221020227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792390 + ... + 795187.

It is an arithmetic number, because the mean of its divisors is an integer number (555652300).

Almost surely, 2^2221020223 is an apocalyptic number.

2221020223 is a deficient number, since it is larger than the sum of its proper divisors (1588977).

2221020223 is a wasteful number, since it uses less digits than its factorization.

2221020223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588976.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2221020223 is about 47127.7012276220. The cubic root of 2221020223 is about 1304.7205545623.

Adding to 2221020223 its reverse (3220201222), we get a palindrome (5441221445).

The spelling of 2221020223 in words is "two billion, two hundred twenty-one million, twenty thousand, two hundred twenty-three".