13213203217 has 2 divisors, whose sum is σ = 13213203218. Its totient is φ = 13213203216.

The previous prime is 13213203197. The next prime is 13213203221. The reversal of 13213203217 is 71230231231.

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., 8972067841 + 4241135376 = 94721^2 + 65124^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213203217 - 2¹⁵ = 13213170449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13213203191 and 13213203200.

It is not a weakly prime, because it can be changed into another prime (13213203247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606601608 + 6606601609.

It is an arithmetic number, because the mean of its divisors is an integer number (6606601609).

Almost surely, 2^13213203217 is an apocalyptic number.

It is an amenable number.

13213203217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213203217 is an equidigital number, since it uses as much as digits as its factorization.

13213203217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 13213203217 its reverse (71230231231), we get a palindrome (84443434448).

The spelling of 13213203217 in words is "thirteen billion, two hundred thirteen million, two hundred three thousand, two hundred seventeen".