13231220003220 has 48 divisors (see below), whose sum is σ = 37082665867968. Its totient is φ = 3524968204800.

The previous prime is 13231220003219. The next prime is 13231220003233. The reversal of 13231220003220 is 2230002213231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104846709 + ... + 104972828.

It is an arithmetic number, because the mean of its divisors is an integer number (772555538916).

Almost surely, 2^{13231220003220} is an apocalyptic number.

13231220003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231220003220 is an abundant number, since it is smaller than the sum of its proper divisors (23851445864748).

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

13231220003220 is a wasteful number, since it uses less digits than its factorization.

13231220003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209820600 (or 209820598 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13231220003220 its reverse (2230002213231), we get a palindrome (15461222216451).

The spelling of 13231220003220 in words is "thirteen trillion, two hundred thirty-one billion, two hundred twenty million, three thousand, two hundred twenty".