13112112323220 has 192 divisors, whose sum is σ = 39203163095040. Its totient is φ = 3266862556672.

The previous prime is 13112112323207. The next prime is 13112112323269. The reversal of 13112112323220 is 2232321121131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32423626 + ... + 32825534.

It is an arithmetic number, because the mean of its divisors is an integer number (204183141120).

Almost surely, 2^{13112112323220} is an apocalyptic number.

13112112323220 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 13112112323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19601581547520).

13112112323220 is an abundant number, since it is smaller than the sum of its proper divisors (26091050771820).

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

13112112323220 is a wasteful number, since it uses less digits than its factorization.

13112112323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402494 (or 402492 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13112112323220 its reverse (2232321121131), we get a palindrome (15344433444351).

The spelling of 13112112323220 in words is "thirteen trillion, one hundred twelve billion, one hundred twelve million, three hundred twenty-three thousand, two hundred twenty".