1322021 has 2 divisors, whose sum is σ = 1322022. Its totient is φ = 1322020.

The previous prime is 1322011. The next prime is 1322033. The reversal of 1322021 is 1202231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 261121 = 1030^2 + 511^2 .

It is an emirp because it is prime and its reverse (1202231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322021 - 2¹⁴ = 1305637 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321993 and 1322011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661010 + 661011.

It is an arithmetic number, because the mean of its divisors is an integer number (661011).

2^1322021 is an apocalyptic number.

It is an amenable number.

1322021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322021 is an equidigital number, since it uses as much as digits as its factorization.

1322021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1322021 is about 1149.7917202694. The cubic root of 1322021 is about 109.7520863097.

Adding to 1322021 its reverse (1202231), we get a palindrome (2524252).

The spelling of 1322021 in words is "one million, three hundred twenty-two thousand, twenty-one".