13404221203401 has 32 divisors (see below), whose sum is σ = 22982255923200. Its totient is φ = 7562598572880.

The previous prime is 13404221203391. The next prime is 13404221203441. The reversal of 13404221203401 is 10430212240431.

13404221203401 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 42 + 212 + 0 + 3 + 401 = 666.

It is not a de Polignac number, because 13404221203401 - 2¹⁷ = 13404221072329 is a prime.

It is a super-2 number, since 2×13404221203401² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13404221203441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448857255 + ... + 448887116.

It is an arithmetic number, because the mean of its divisors is an integer number (718195497600).

Almost surely, 2^{13404221203401} is an apocalyptic number.

It is an amenable number.

13404221203401 is a deficient number, since it is larger than the sum of its proper divisors (9578034719799).

13404221203401 is an equidigital number, since it uses as much as digits as its factorization.

13404221203401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897744466 (or 897744460 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13404221203401 its reverse (10430212240431), we get a palindrome (23834433443832).

The spelling of 13404221203401 in words is "thirteen trillion, four hundred four billion, two hundred twenty-one million, two hundred three thousand, four hundred one".