1322001 has 20 divisors (see below), whose sum is σ = 2081200. Its totient is φ = 833976.

The previous prime is 1321997. The next prime is 1322003. The reversal of 1322001 is 1002231.

It is a happy number.

It is not a de Polignac number, because 1322001 - 2² = 1321997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

1322001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1322003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1110 + ... + 1968.

It is an arithmetic number, because the mean of its divisors is an integer number (104060).

2^1322001 is an apocalyptic number.

It is an amenable number.

1322001 is a deficient number, since it is larger than the sum of its proper divisors (759199).

1322001 is an equidigital number, since it uses as much as digits as its factorization.

1322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1322001 is about 1149.7830230091. The cubic root of 1322001 is about 109.7515328508.

Adding to 1322001 its reverse (1002231), we get a palindrome (2324232).

The spelling of 1322001 in words is "one million, three hundred twenty-two thousand, one".