11123320031020 has 48 divisors (see below), whose sum is σ = 23657070528000. Its totient is φ = 4392558855360.

The previous prime is 11123320031009. The next prime is 11123320031071. The reversal of 11123320031020 is 2013002332111.

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, 15336531 + ... + 16045429.

It is an arithmetic number, because the mean of its divisors is an integer number (492855636000).

Almost surely, 2^{11123320031020} is an apocalyptic number.

11123320031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123320031020 is an abundant number, since it is smaller than the sum of its proper divisors (12533750496980).

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

11123320031020 is a wasteful number, since it uses less digits than its factorization.

11123320031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718918 (or 718916 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11123320031020 its reverse (2013002332111), we get a palindrome (13136322363131).

The spelling of 11123320031020 in words is "eleven trillion, one hundred twenty-three billion, three hundred twenty million, thirty-one thousand, twenty".