13252245221 has 2 divisors, whose sum is σ = 13252245222. Its totient is φ = 13252245220.

The previous prime is 13252245173. The next prime is 13252245233. The reversal of 13252245221 is 12254225231.

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., 13112769121 + 139476100 = 114511^2 + 11810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13252245221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13252242221) 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, 6626122610 + 6626122611.

It is an arithmetic number, because the mean of its divisors is an integer number (6626122611).

Almost surely, 2^13252245221 is an apocalyptic number.

It is an amenable number.

13252245221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13252245221 is an equidigital number, since it uses as much as digits as its factorization.

13252245221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The spelling of 13252245221 in words is "thirteen billion, two hundred fifty-two million, two hundred forty-five thousand, two hundred twenty-one".