12011336028 has 144 divisors (see below), whose sum is σ = 31851211392. Its totient is φ = 3813264000.

The previous prime is 12011336003. The next prime is 12011336033. The reversal of 12011336028 is 82063311021.

It is a happy number.

12011336028 is a `hidden beast` number, since 1 + 20 + 1 + 1 + 33 + 602 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12011335992 and 12011336010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12369583 + ... + 12370553.

It is an arithmetic number, because the mean of its divisors is an integer number (221188968).

Almost surely, 2^12011336028 is an apocalyptic number.

12011336028 is a gapful number since it is divisible by the number (18) 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 12011336028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15925605696).

12011336028 is an abundant number, since it is smaller than the sum of its proper divisors (19839875364).

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

12011336028 is a wasteful number, since it uses less digits than its factorization.

12011336028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 12011336028 its reverse (82063311021), we get a palindrome (94074647049).

The spelling of 12011336028 in words is "twelve billion, eleven million, three hundred thirty-six thousand, twenty-eight".