13220222437 has 2 divisors, whose sum is σ = 13220222438. Its totient is φ = 13220222436.

The previous prime is 13220222429. The next prime is 13220222471. The reversal of 13220222437 is 73422202231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7073819236 + 6146403201 = 84106^2 + 78399^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220222437 - 2³ = 13220222429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220222497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610111218 + 6610111219.

It is an arithmetic number, because the mean of its divisors is an integer number (6610111219).

Almost surely, 2^13220222437 is an apocalyptic number.

It is an amenable number.

13220222437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220222437 is an equidigital number, since it uses as much as digits as its factorization.

13220222437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 13220222437 its reverse (73422202231), we get a palindrome (86642424668).

The spelling of 13220222437 in words is "thirteen billion, two hundred twenty million, two hundred twenty-two thousand, four hundred thirty-seven".