2221445321 has 8 divisors (see below), whose sum is σ = 2243592000. Its totient is φ = 2199395440.

The previous prime is 2221445293. The next prime is 2221445323. The reversal of 2221445321 is 1235441222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221445321 - 2²² = 2217251017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221445323) 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, 22370 + ... + 70308.

It is an arithmetic number, because the mean of its divisors is an integer number (280449000).

Almost surely, 2^2221445321 is an apocalyptic number.

It is an amenable number.

2221445321 is a deficient number, since it is larger than the sum of its proper divisors (22146679).

2221445321 is a wasteful number, since it uses less digits than its factorization.

2221445321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48399.

The product of its digits is 3840, while the sum is 26.

The square root of 2221445321 is about 47132.2110769270. The cubic root of 2221445321 is about 1304.8037893915.

Adding to 2221445321 its reverse (1235441222), we get a palindrome (3456886543).

The spelling of 2221445321 in words is "two billion, two hundred twenty-one million, four hundred forty-five thousand, three hundred twenty-one".