1322132221 has 2 divisors, whose sum is σ = 1322132222. Its totient is φ = 1322132220.

The previous prime is 1322132197. The next prime is 1322132249. The reversal of 1322132221 is 1222312231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1221852025 + 100280196 = 34955^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322132221 - 2⁹ = 1322131709 is a prime.

It is a super-3 number, since 3×1322132221³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322132261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661066110 + 661066111.

It is an arithmetic number, because the mean of its divisors is an integer number (661066111).

Almost surely, 2^1322132221 is an apocalyptic number.

It is an amenable number.

1322132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322132221 is an equidigital number, since it uses as much as digits as its factorization.

1322132221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 1322132221 is about 36361.1361346149. The cubic root of 1322132221 is about 1097.5516402038.

Adding to 1322132221 its reverse (1222312231), we get a palindrome (2544444452).

The spelling of 1322132221 in words is "one billion, three hundred twenty-two million, one hundred thirty-two thousand, two hundred twenty-one".