13102235221 has 2 divisors, whose sum is σ = 13102235222. Its totient is φ = 13102235220.

The previous prime is 13102235207. The next prime is 13102235227. The reversal of 13102235221 is 12253220131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7818980625 + 5283254596 = 88425^2 + 72686^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102235221 - 2⁷ = 13102235093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13102235192 and 13102235201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13102235227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551117610 + 6551117611.

It is an arithmetic number, because the mean of its divisors is an integer number (6551117611).

Almost surely, 2^13102235221 is an apocalyptic number.

It is an amenable number.

13102235221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13102235221 is an equidigital number, since it uses as much as digits as its factorization.

13102235221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 13102235221 its reverse (12253220131), we get a palindrome (25355455352).

The spelling of 13102235221 in words is "thirteen billion, one hundred two million, two hundred thirty-five thousand, two hundred twenty-one".