13311044421402 has 96 divisors (see below), whose sum is σ = 32994644139648. Its totient is φ = 3505387511808.

The previous prime is 13311044421401. The next prime is 13311044421407. The reversal of 13311044421402 is 20412444011331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13311044421402.

It is not an unprimeable number, because it can be changed into a prime (13311044421401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3383698 + ... + 6170210.

It is an arithmetic number, because the mean of its divisors is an integer number (343694209788).

Almost surely, 2^{13311044421402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13311044421402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16497322069824).

13311044421402 is an abundant number, since it is smaller than the sum of its proper divisors (19683599718246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13311044421402 is a wasteful number, since it uses less digits than its factorization.

13311044421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787224 (or 2787211 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 13311044421402 its reverse (20412444011331), we get a palindrome (33723488432733).

The spelling of 13311044421402 in words is "thirteen trillion, three hundred eleven billion, forty-four million, four hundred twenty-one thousand, four hundred two".