1322002021 has 2 divisors, whose sum is σ = 1322002022. Its totient is φ = 1322002020.

The previous prime is 1322001997. The next prime is 1322002049. The reversal of 1322002021 is 1202002231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1136633796 + 185368225 = 33714^2 + 13615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322002021 - 2⁹ = 1322001509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322001992 and 1322002010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322002061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661001010 + 661001011.

It is an arithmetic number, because the mean of its divisors is an integer number (661001011).

Almost surely, 2^1322002021 is an apocalyptic number.

It is an amenable number.

1322002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322002021 is an equidigital number, since it uses as much as digits as its factorization.

1322002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1322002021 is about 36359.3457174356. The cubic root of 1322002021 is about 1097.5156110502.

Adding to 1322002021 its reverse (1202002231), we get a palindrome (2524004252).

The spelling of 1322002021 in words is "one billion, three hundred twenty-two million, two thousand, twenty-one".