1322231333221 has 2 divisors, whose sum is σ = 1322231333222. Its totient is φ = 1322231333220.

The previous prime is 1322231333177. The next prime is 1322231333231. The reversal of 1322231333221 is 1223331322231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291373140996 + 30858192225 = 1136386^2 + 175665^2 .

It is an emirp because it is prime and its reverse (1223331322231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322231333221 - 2¹¹ = 1322231331173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1322231333221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322231333231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661115666610 + 661115666611.

It is an arithmetic number, because the mean of its divisors is an integer number (661115666611).

Almost surely, 2^{1322231333221} is an apocalyptic number.

It is an amenable number.

1322231333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322231333221 is an equidigital number, since it uses as much as digits as its factorization.

1322231333221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

Adding to 1322231333221 its reverse (1223331322231), we get a palindrome (2545562655452).

The spelling of 1322231333221 in words is "one trillion, three hundred twenty-two billion, two hundred thirty-one million, three hundred thirty-three thousand, two hundred twenty-one".