13213301220 has 144 divisors (see below), whose sum is σ = 45903836160. Its totient is φ = 3013740288.

The previous prime is 13213301201. The next prime is 13213301239. The reversal of 13213301220 is 2210331231.

13213301220 is a `hidden beast` number, since 1 + 321 + 330 + 12 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (13213301201) and next prime (13213301239).

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 = 13213301193 and 13213301202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 592594 + ... + 614486.

It is an arithmetic number, because the mean of its divisors is an integer number (318776640).

Almost surely, 2^13213301220 is an apocalyptic number.

13213301220 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 13213301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22951918080).

13213301220 is an abundant number, since it is smaller than the sum of its proper divisors (32690534940).

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

13213301220 is a wasteful number, since it uses less digits than its factorization.

13213301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22394 (or 22389 counting only the distinct ones).

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

Adding to 13213301220 its reverse (2210331231), we get a palindrome (15423632451).

The spelling of 13213301220 in words is "thirteen billion, two hundred thirteen million, three hundred one thousand, two hundred twenty".