1322221122181 has 2 divisors, whose sum is σ = 1322221122182. Its totient is φ = 1322221122180.

The previous prime is 1322221122151. The next prime is 1322221122227. The reversal of 1322221122181 is 1812211222231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1294495542081 + 27725580100 = 1137759^2 + 166510^2 .

It is an emirp because it is prime and its reverse (1812211222231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322221122181 - 2⁵ = 1322221122149 is a prime.

It is a super-2 number, since 2×1322221122181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322221122121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661110561090 + 661110561091.

It is an arithmetic number, because the mean of its divisors is an integer number (661110561091).

Almost surely, 2^{1322221122181} is an apocalyptic number.

It is an amenable number.

1322221122181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322221122181 is an equidigital number, since it uses as much as digits as its factorization.

1322221122181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 28.

The spelling of 1322221122181 in words is "one trillion, three hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred eighty-one".