1321622 has 4 divisors (see below), whose sum is σ = 1982436. Its totient is φ = 660810.

The previous prime is 1321601. The next prime is 1321627. The reversal of 1321622 is 2261231.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1321622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330404 + ... + 330407.

It is an arithmetic number, because the mean of its divisors is an integer number (495609).

2^1321622 is an apocalyptic number.

1321622 is a deficient number, since it is larger than the sum of its proper divisors (660814).

1321622 is an equidigital number, since it uses as much as digits as its factorization.

1321622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660813.

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

The square root of 1321622 is about 1149.6181974899. The cubic root of 1321622 is about 109.7410437497.

Adding to 1321622 its reverse (2261231), we get a palindrome (3582853).

The spelling of 1321622 in words is "one million, three hundred twenty-one thousand, six hundred twenty-two".