13321310220 has 120 divisors (see below), whose sum is σ = 42318830400. Its totient is φ = 3507349248.

The previous prime is 13321310203. The next prime is 13321310237. The reversal of 13321310220 is 2201312331.

13321310220 is a `hidden beast` number, since 1 + 332 + 1 + 310 + 2 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (13321310203) and next prime (13321310237).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13321310193 and 13321310202.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75936 + ... + 180024.

It is an arithmetic number, because the mean of its divisors is an integer number (352656920).

Almost surely, 2^13321310220 is an apocalyptic number.

13321310220 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 13321310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21159415200).

13321310220 is an abundant number, since it is smaller than the sum of its proper divisors (28997520180).

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

13321310220 is a wasteful number, since it uses less digits than its factorization.

13321310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104189 (or 104178 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13321310220 its reverse (2201312331), we get a palindrome (15522622551).

The spelling of 13321310220 in words is "thirteen billion, three hundred twenty-one million, three hundred ten thousand, two hundred twenty".