13111121323320 has 128 divisors (see below), whose sum is σ = 40999360550400. Its totient is φ = 3351031174656.

The previous prime is 13111121323319. The next prime is 13111121323369. The reversal of 13111121323320 is 2332312111131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21739500 + ... + 22334459.

It is an arithmetic number, because the mean of its divisors is an integer number (320307504300).

Almost surely, 2^{13111121323320} is an apocalyptic number.

13111121323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111121323320 is an abundant number, since it is smaller than the sum of its proper divisors (27888239227080).

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

13111121323320 is a wasteful number, since it uses less digits than its factorization.

13111121323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44074077 (or 44074073 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13111121323320 its reverse (2332312111131), we get a palindrome (15443433434451).

The spelling of 13111121323320 in words is "thirteen trillion, one hundred eleven billion, one hundred twenty-one million, three hundred twenty-three thousand, three hundred twenty".