13442252221 has 8 divisors (see below), whose sum is σ = 14155012800. Its totient is φ = 12730019040.

The previous prime is 13442252207. The next prime is 13442252279. The reversal of 13442252221 is 12225224431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13442252221 - 2¹⁷ = 13442121149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13442252221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442256221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78976 + ... + 181993.

It is an arithmetic number, because the mean of its divisors is an integer number (1769376600).

Almost surely, 2^13442252221 is an apocalyptic number.

It is an amenable number.

13442252221 is a deficient number, since it is larger than the sum of its proper divisors (712760579).

13442252221 is a wasteful number, since it uses less digits than its factorization.

13442252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263699.

The product of its digits is 7680, while the sum is 28.

Adding to 13442252221 its reverse (12225224431), we get a palindrome (25667476652).

The spelling of 13442252221 in words is "thirteen billion, four hundred forty-two million, two hundred fifty-two thousand, two hundred twenty-one".