2221455343 has 4 divisors (see below), whose sum is σ = 2222091568. Its totient is φ = 2220819120.

The previous prime is 2221455289. The next prime is 2221455347. The reversal of 2221455343 is 3435541222.

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 2221455343 - 2⁹ = 2221454831 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 (2221455347) 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, 312846 + ... + 319867.

It is an arithmetic number, because the mean of its divisors is an integer number (555522892).

Almost surely, 2^2221455343 is an apocalyptic number.

2221455343 is a deficient number, since it is larger than the sum of its proper divisors (636225).

2221455343 is an equidigital number, since it uses as much as digits as its factorization.

2221455343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636224.

The product of its digits is 28800, while the sum is 31.

The square root of 2221455343 is about 47132.3173947558. The cubic root of 2221455343 is about 1304.8057515861.

Adding to 2221455343 its reverse (3435541222), we get a palindrome (5656996565).

The spelling of 2221455343 in words is "two billion, two hundred twenty-one million, four hundred fifty-five thousand, three hundred forty-three".