13212201212220 has 48 divisors (see below), whose sum is σ = 36994407851520. Its totient is φ = 3523230374976.

The previous prime is 13212201212219. The next prime is 13212201212237. The reversal of 13212201212220 is 2221210221231.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9651769 + ... + 10935311.

It is an arithmetic number, because the mean of its divisors is an integer number (770716830240).

Almost surely, 2^{13212201212220} is an apocalyptic number.

13212201212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212201212220 is an abundant number, since it is smaller than the sum of its proper divisors (23782206639300).

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

13212201212220 is a wasteful number, since it uses less digits than its factorization.

13212201212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455114 (or 1455112 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13212201212220 its reverse (2221210221231), we get a palindrome (15433411433451).

The spelling of 13212201212220 in words is "thirteen trillion, two hundred twelve billion, two hundred one million, two hundred twelve thousand, two hundred twenty".