13444311302421 has 8 divisors (see below), whose sum is σ = 17932808574240. Its totient is φ = 8959344116112.

The previous prime is 13444311302399. The next prime is 13444311302449. The reversal of 13444311302421 is 12420311344431.

It is a happy number.

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

It is not a de Polignac number, because 13444311302421 - 2⁷ = 13444311302293 is a prime.

It is a super-2 number, since 2×13444311302421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444311302921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882512490 + ... + 882527723.

It is an arithmetic number, because the mean of its divisors is an integer number (2241601071780).

Almost surely, 2^{13444311302421} is an apocalyptic number.

It is an amenable number.

13444311302421 is a deficient number, since it is larger than the sum of its proper divisors (4488497271819).

13444311302421 is a wasteful number, since it uses less digits than its factorization.

13444311302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765042755.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 13444311302421 its reverse (12420311344431), we get a palindrome (25864622646852).

The spelling of 13444311302421 in words is "thirteen trillion, four hundred forty-four billion, three hundred eleven million, three hundred two thousand, four hundred twenty-one".