13222444532345 has 4 divisors (see below), whose sum is σ = 15866933438820. Its totient is φ = 10577955625872.

The previous prime is 13222444532317. The next prime is 13222444532347. The reversal of 13222444532345 is 54323544422231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6854452846201 + 6367991686144 = 2618101^2 + 2523488^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222444532345 - 2³⁰ = 13221370790521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13222444532296 and 13222444532305.

It is not an unprimeable number, because it can be changed into a prime (13222444532347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322244453230 + ... + 1322244453239.

It is an arithmetic number, because the mean of its divisors is an integer number (3966733359705).

Almost surely, 2^{13222444532345} is an apocalyptic number.

It is an amenable number.

13222444532345 is a deficient number, since it is larger than the sum of its proper divisors (2644488906475).

13222444532345 is an equidigital number, since it uses as much as digits as its factorization.

13222444532345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644488906474.

The product of its digits is 2764800, while the sum is 44.

Adding to 13222444532345 its reverse (54323544422231), we get a palindrome (67545988954576).

The spelling of 13222444532345 in words is "thirteen trillion, two hundred twenty-two billion, four hundred forty-four million, five hundred thirty-two thousand, three hundred forty-five".