13021111120 has 40 divisors (see below), whose sum is σ = 30303138600. Its totient is φ = 5203445760.

The previous prime is 13021111069. The next prime is 13021111139. The reversal of 13021111120 is 2111112031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5345949456 + 7675161664 = 73116^2 + 87608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 13021111120.

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 7 ways as a sum of consecutive naturals, for example, 6340 + ... + 161500.

It is an arithmetic number, because the mean of its divisors is an integer number (757578465).

Almost surely, 2^13021111120 is an apocalyptic number.

13021111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021111120 is an abundant number, since it is smaller than the sum of its proper divisors (17282027480).

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

13021111120 is a wasteful number, since it uses less digits than its factorization.

13021111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156223 (or 156217 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 13021111120 its reverse (2111112031), we get a palindrome (15132223151).

The spelling of 13021111120 in words is "thirteen billion, twenty-one million, one hundred eleven thousand, one hundred twenty".