2221270 has 8 divisors (see below), whose sum is σ = 3998304. Its totient is φ = 888504.

The previous prime is 2221259. The next prime is 2221273. The reversal of 2221270 is 721222.

2221270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221273) 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 3 ways as a sum of consecutive naturals, for example, 111054 + ... + 111073.

It is an arithmetic number, because the mean of its divisors is an integer number (499788).

2^2221270 is an apocalyptic number.

2221270 is a deficient number, since it is larger than the sum of its proper divisors (1777034).

2221270 is a wasteful number, since it uses less digits than its factorization.

2221270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222134.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2221270 is about 1490.3925657356. The cubic root of 2221270 is about 130.4769462562.

Adding to 2221270 its reverse (721222), we get a palindrome (2942492).

The spelling of 2221270 in words is "two million, two hundred twenty-one thousand, two hundred seventy".