13312221010420 has 48 divisors (see below), whose sum is σ = 28523509510608. Its totient is φ = 5217814425600.

The previous prime is 13312221010393. The next prime is 13312221010421. The reversal of 13312221010420 is 2401012221331.

It can be written as a sum of positive squares in 8 ways, for example, as 2948212625296 + 10364008385124 = 1717036^2 + 3219318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13312221010391 and 13312221010400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312221010421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33774207 + ... + 34166086.

It is an arithmetic number, because the mean of its divisors is an integer number (594239781471).

Almost surely, 2^{13312221010420} is an apocalyptic number.

13312221010420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13312221010420 is an abundant number, since it is smaller than the sum of its proper divisors (15211288500188).

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

13312221010420 is a wasteful number, since it uses less digits than its factorization.

13312221010420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67940500 (or 67940498 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13312221010420 its reverse (2401012221331), we get a palindrome (15713233231751).

The spelling of 13312221010420 in words is "thirteen trillion, three hundred twelve billion, two hundred twenty-one million, ten thousand, four hundred twenty".