12011130331100 has 72 divisors (see below), whose sum is σ = 27608373763488. Its totient is φ = 4520029132800.

The previous prime is 12011130331099. The next prime is 12011130331177. The reversal of 12011130331100 is 113303111021.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2843720 + ... + 5666480.

It is an arithmetic number, because the mean of its divisors is an integer number (383449635604).

Almost surely, 2^{12011130331100} is an apocalyptic number.

12011130331100 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 12011130331100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13804186881744).

12011130331100 is an abundant number, since it is smaller than the sum of its proper divisors (15597243432388).

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

12011130331100 is a wasteful number, since it uses less digits than its factorization.

12011130331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825295 (or 2825288 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 12011130331100 its reverse (113303111021), we get a palindrome (12124433442121).

The spelling of 12011130331100 in words is "twelve trillion, eleven billion, one hundred thirty million, three hundred thirty-one thousand, one hundred".