13121030111120 has 80 divisors (see below), whose sum is σ = 30770869913280. Its totient is φ = 5203021604352.

The previous prime is 13121030111099. The next prime is 13121030111179. The reversal of 13121030111120 is 2111103012131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13121030111120² (a number of 27 digits) contains 22 as substring.

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, 6731162 + ... + 8458758.

It is an arithmetic number, because the mean of its divisors is an integer number (384635873916).

Almost surely, 2^{13121030111120} is an apocalyptic number.

13121030111120 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 13121030111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15385434956640).

13121030111120 is an abundant number, since it is smaller than the sum of its proper divisors (17649839802160).

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

13121030111120 is a wasteful number, since it uses less digits than its factorization.

13121030111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728432 (or 1728426 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 13121030111120 its reverse (2111103012131), we get a palindrome (15232133123251).

The spelling of 13121030111120 in words is "thirteen trillion, one hundred twenty-one billion, thirty million, one hundred eleven thousand, one hundred twenty".