11231331312120 has 128 divisors (see below), whose sum is σ = 34030535546880. Its totient is φ = 2965112000000.

The previous prime is 11231331312059. The next prime is 11231331312163. The reversal of 11231331312120 is 2121313313211.

It is a super-2 number, since 2×11231331312120² (a number of 27 digits) contains 22 as substring.

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, 170265145 + ... + 170331095.

It is an arithmetic number, because the mean of its divisors is an integer number (265863558960).

Almost surely, 2^{11231331312120} is an apocalyptic number.

11231331312120 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 11231331312120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17015267773440).

11231331312120 is an abundant number, since it is smaller than the sum of its proper divisors (22799204234760).

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

11231331312120 is a wasteful number, since it uses less digits than its factorization.

11231331312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80117 (or 80113 counting only the distinct ones).

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

Adding to 11231331312120 its reverse (2121313313211), we get a palindrome (13352644625331).

The spelling of 11231331312120 in words is "eleven trillion, two hundred thirty-one billion, three hundred thirty-one million, three hundred twelve thousand, one hundred twenty".