13221101230020 has 144 divisors (see below), whose sum is σ = 42733533246768. Its totient is φ = 3297101783040.

The previous prime is 13221101229997. The next prime is 13221101230063. The reversal of 13221101230020 is 2003210112231.

13221101230020 is a `hidden beast` number, since 1 + 322 + 1 + 10 + 12 + 300 + 20 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 161160496704 + 13059940733316 = 401448^2 + 3613854^2 .

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 = 13221101229975 and 13221101230002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13279521 + ... + 14240360.

It is an arithmetic number, because the mean of its divisors is an integer number (296760647547).

Almost surely, 2^{13221101230020} is an apocalyptic number.

13221101230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221101230020 is an abundant number, since it is smaller than the sum of its proper divisors (29512432016748).

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

13221101230020 is a wasteful number, since it uses less digits than its factorization.

13221101230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27520070 (or 27520065 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13221101230020 its reverse (2003210112231), we get a palindrome (15224311342251).

The spelling of 13221101230020 in words is "thirteen trillion, two hundred twenty-one billion, one hundred one million, two hundred thirty thousand, twenty".