2221213443 has 8 divisors (see below), whose sum is σ = 3063742800. Its totient is φ = 1429746528.

The previous prime is 2221213441. The next prime is 2221213447. The reversal of 2221213443 is 3443121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221213443 - 2¹ = 2221213441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221213441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12765508 + ... + 12765681.

It is an arithmetic number, because the mean of its divisors is an integer number (382967850).

Almost surely, 2^2221213443 is an apocalyptic number.

2221213443 is a deficient number, since it is larger than the sum of its proper divisors (842529357).

2221213443 is a wasteful number, since it uses less digits than its factorization.

2221213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25531221.

The product of its digits is 2304, while the sum is 24.

The square root of 2221213443 is about 47129.7511451100. The cubic root of 2221213443 is about 1304.7583886461.

Adding to 2221213443 its reverse (3443121222), we get a palindrome (5664334665).

The spelling of 2221213443 in words is "two billion, two hundred twenty-one million, two hundred thirteen thousand, four hundred forty-three".