2221347 has 8 divisors (see below), whose sum is σ = 3117760. Its totient is φ = 1402920.

The previous prime is 2221343. The next prime is 2221379. The reversal of 2221347 is 7431222.

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

It is not a de Polignac number, because 2221347 - 2² = 2221343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19429 + ... + 19542.

It is an arithmetic number, because the mean of its divisors is an integer number (389720).

2^2221347 is an apocalyptic number.

2221347 is a deficient number, since it is larger than the sum of its proper divisors (896413).

2221347 is a wasteful number, since it uses less digits than its factorization.

2221347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38993.

The product of its digits is 672, while the sum is 21.

The square root of 2221347 is about 1490.4183976320. The cubic root of 2221347 is about 130.4784538936.

Adding to 2221347 its reverse (7431222), we get a palindrome (9652569).

The spelling of 2221347 in words is "two million, two hundred twenty-one thousand, three hundred forty-seven".