13445442221333 has 4 divisors (see below), whose sum is σ = 13527929597088. Its totient is φ = 13362954845580.

The previous prime is 13445442221329. The next prime is 13445442221339. The reversal of 13445442221333 is 33312224454431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13445442221333 - 2² = 13445442221329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445442221339) 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, 41243687633 + ... + 41243687958.

It is an arithmetic number, because the mean of its divisors is an integer number (3381982399272).

Almost surely, 2^{13445442221333} is an apocalyptic number.

It is an amenable number.

13445442221333 is a deficient number, since it is larger than the sum of its proper divisors (82487375755).

13445442221333 is an equidigital number, since it uses as much as digits as its factorization.

13445442221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82487375754.

The product of its digits is 829440, while the sum is 41.

Adding to 13445442221333 its reverse (33312224454431), we get a palindrome (46757666675764).

The spelling of 13445442221333 in words is "thirteen trillion, four hundred forty-five billion, four hundred forty-two million, two hundred twenty-one thousand, three hundred thirty-three".