13220123312220 has 96 divisors (see below), whose sum is σ = 41472858663936. Its totient is φ = 3118260038400.

The previous prime is 13220123312203. The next prime is 13220123312309. The reversal of 13220123312220 is 2221332102231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270657876 + ... + 270706715.

It is an arithmetic number, because the mean of its divisors is an integer number (432008944416).

Almost surely, 2^{13220123312220} is an apocalyptic number.

13220123312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220123312220 is an abundant number, since it is smaller than the sum of its proper divisors (28252735351716).

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

13220123312220 is a wasteful number, since it uses less digits than its factorization.

13220123312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541364651 (or 541364649 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13220123312220 its reverse (2221332102231), we get a palindrome (15441455414451).

The spelling of 13220123312220 in words is "thirteen trillion, two hundred twenty billion, one hundred twenty-three million, three hundred twelve thousand, two hundred twenty".