13421334220 has 72 divisors (see below), whose sum is σ = 32847652656. Its totient is φ = 4593004416.

The previous prime is 13421334203. The next prime is 13421334221. The reversal of 13421334220 is 2243312431.

It is not an unprimeable number, because it can be changed into a prime (13421334221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523542 + ... + 548578.

It is an arithmetic number, because the mean of its divisors is an integer number (456217398).

Almost surely, 2^13421334220 is an apocalyptic number.

13421334220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13421334220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16423826328).

13421334220 is an abundant number, since it is smaller than the sum of its proper divisors (19426318436).

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

13421334220 is a wasteful number, since it uses less digits than its factorization.

13421334220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25607 (or 25598 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13421334220 its reverse (2243312431), we get a palindrome (15664646651).

The spelling of 13421334220 in words is "thirteen billion, four hundred twenty-one million, three hundred thirty-four thousand, two hundred twenty".