2221402 has 8 divisors (see below), whose sum is σ = 3345300. Its totient is φ = 1106304.

The previous prime is 2221399. The next prime is 2221403. The reversal of 2221402 is 2041222.

2221402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 121801 = 1449^2 + 349^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2221403) 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, 1527 + ... + 2602.

2^2221402 is an apocalyptic number.

2221402 is a deficient number, since it is larger than the sum of its proper divisors (1123898).

2221402 is a wasteful number, since it uses less digits than its factorization.

2221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2221402 is about 1490.4368487125. The cubic root of 2221402 is about 130.4795307560.

Adding to 2221402 its reverse (2041222), we get a palindrome (4262624).

The spelling of 2221402 in words is "two million, two hundred twenty-one thousand, four hundred two".