13283723221 has 2 divisors, whose sum is σ = 13283723222. Its totient is φ = 13283723220.

The previous prime is 13283723191. The next prime is 13283723237. The reversal of 13283723221 is 12232738231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12541760100 + 741963121 = 111990^2 + 27239^2 .

It is a cyclic number.

It is not a de Polignac number, because 13283723221 - 2¹⁷ = 13283592149 is a prime.

It is a super-2 number, since 2×13283723221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13283721221) 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, 6641861610 + 6641861611.

It is an arithmetic number, because the mean of its divisors is an integer number (6641861611).

Almost surely, 2^13283723221 is an apocalyptic number.

It is an amenable number.

13283723221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13283723221 is an equidigital number, since it uses as much as digits as its factorization.

13283723221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The spelling of 13283723221 in words is "thirteen billion, two hundred eighty-three million, seven hundred twenty-three thousand, two hundred twenty-one".