2161322 has 4 divisors (see below), whose sum is σ = 3241986. Its totient is φ = 1080660.

The previous prime is 2161319. The next prime is 2161331. The reversal of 2161322 is 2231612.

2161322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2070721 + 90601 = 1439^2 + 301^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2161322.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 540329 + ... + 540332.

2^2161322 is an apocalyptic number.

2161322 is a deficient number, since it is larger than the sum of its proper divisors (1080664).

2161322 is a wasteful number, since it uses less digits than its factorization.

2161322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080663.

The product of its digits is 144, while the sum is 17.

The square root of 2161322 is about 1470.1435304078. The cubic root of 2161322 is about 129.2924479000.

Adding to 2161322 its reverse (2231612), we get a palindrome (4392934).

The spelling of 2161322 in words is "two million, one hundred sixty-one thousand, three hundred twenty-two".