2221323143 has 16 divisors (see below), whose sum is σ = 2429028000. Its totient is φ = 2019072000.

The previous prime is 2221323119. The next prime is 2221323149. The reversal of 2221323143 is 3413231222.

It is a cyclic number.

It is not a de Polignac number, because 2221323143 - 2¹⁶ = 2221257607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221323149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286583 + ... + 294231.

It is an arithmetic number, because the mean of its divisors is an integer number (151814250).

Almost surely, 2^2221323143 is an apocalyptic number.

2221323143 is a deficient number, since it is larger than the sum of its proper divisors (207704857).

2221323143 is a wasteful number, since it uses less digits than its factorization.

2221323143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002.

The product of its digits is 1728, while the sum is 23.

The square root of 2221323143 is about 47130.9149391352. The cubic root of 2221323143 is about 1304.7798678424.

Adding to 2221323143 its reverse (3413231222), we get a palindrome (5634554365).

The spelling of 2221323143 in words is "two billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred forty-three".