13403221420 has 12 divisors (see below), whose sum is σ = 28146765024. Its totient is φ = 5361288560.

The previous prime is 13403221387. The next prime is 13403221423. The reversal of 13403221420 is 2412230431.

It is a junction number, because it is equal to n+sod(n) for n = 13403221391 and 13403221400.

It is not an unprimeable number, because it can be changed into a prime (13403221423) 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, 335080516 + ... + 335080555.

It is an arithmetic number, because the mean of its divisors is an integer number (2345563752).

Almost surely, 2^13403221420 is an apocalyptic number.

13403221420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13403221420 is an abundant number, since it is smaller than the sum of its proper divisors (14743543604).

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

13403221420 is a wasteful number, since it uses less digits than its factorization.

13403221420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670161080 (or 670161078 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13403221420 its reverse (2412230431), we get a palindrome (15815451851).

The spelling of 13403221420 in words is "thirteen billion, four hundred three million, two hundred twenty-one thousand, four hundred twenty".