13531221107 has 2 divisors, whose sum is σ = 13531221108. Its totient is φ = 13531221106.

The previous prime is 13531221083. The next prime is 13531221113. The reversal of 13531221107 is 70112213531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13531221107 - 2⁸ = 13531220851 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531221007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765610553 + 6765610554.

It is an arithmetic number, because the mean of its divisors is an integer number (6765610554).

Almost surely, 2^13531221107 is an apocalyptic number.

13531221107 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531221107 is an equidigital number, since it uses as much as digits as its factorization.

13531221107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 26.

Adding to 13531221107 its reverse (70112213531), we get a palindrome (83643434638).

The spelling of 13531221107 in words is "thirteen billion, five hundred thirty-one million, two hundred twenty-one thousand, one hundred seven".