13131022217 has 2 divisors, whose sum is σ = 13131022218. Its totient is φ = 13131022216.

The previous prime is 13131022181. The next prime is 13131022231. The reversal of 13131022217 is 71222013131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9057519241 + 4073502976 = 95171^2 + 63824^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131022217 - 2¹⁶ = 13130956681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13131022192 and 13131022201.

It is not a weakly prime, because it can be changed into another prime (13131022237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565511108 + 6565511109.

It is an arithmetic number, because the mean of its divisors is an integer number (6565511109).

Almost surely, 2^13131022217 is an apocalyptic number.

It is an amenable number.

13131022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131022217 is an equidigital number, since it uses as much as digits as its factorization.

13131022217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 13131022217 its reverse (71222013131), we get a palindrome (84353035348).

The spelling of 13131022217 in words is "thirteen billion, one hundred thirty-one million, twenty-two thousand, two hundred seventeen".