13002311221 has 2 divisors, whose sum is σ = 13002311222. Its totient is φ = 13002311220.

The previous prime is 13002311209. The next prime is 13002311239. The reversal of 13002311221 is 12211320031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12717072900 + 285238321 = 112770^2 + 16889^2 .

It is a cyclic number.

It is not a de Polignac number, because 13002311221 - 2⁹ = 13002310709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13002311195 and 13002311204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13002311291) 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, 6501155610 + 6501155611.

It is an arithmetic number, because the mean of its divisors is an integer number (6501155611).

Almost surely, 2^13002311221 is an apocalyptic number.

It is an amenable number.

13002311221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13002311221 is an equidigital number, since it uses as much as digits as its factorization.

13002311221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13002311221 its reverse (12211320031), we get a palindrome (25213631252).

The spelling of 13002311221 in words is "thirteen billion, two million, three hundred eleven thousand, two hundred twenty-one".