13221032137 has 2 divisors, whose sum is σ = 13221032138. Its totient is φ = 13221032136.

The previous prime is 13221032131. The next prime is 13221032183. The reversal of 13221032137 is 73123012231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11981710521 + 1239321616 = 109461^2 + 35204^2 .

It is a cyclic number.

It is not a de Polignac number, because 13221032137 - 2³ = 13221032129 is a prime.

It is not a weakly prime, because it can be changed into another prime (13221032131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610516068 + 6610516069.

It is an arithmetic number, because the mean of its divisors is an integer number (6610516069).

Almost surely, 2^13221032137 is an apocalyptic number.

It is an amenable number.

13221032137 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221032137 is an equidigital number, since it uses as much as digits as its factorization.

13221032137 is an odious number, because the sum of its binary digits is odd.

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

Adding to 13221032137 its reverse (73123012231), we get a palindrome (86344044368).

The spelling of 13221032137 in words is "thirteen billion, two hundred twenty-one million, thirty-two thousand, one hundred thirty-seven".