11985004220 has 192 divisors, whose sum is σ = 30920472576. Its totient is φ = 3813765120.

The previous prime is 11985004217. The next prime is 11985004231. The reversal of 11985004220 is 2240058911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15748640 + ... + 15749400.

It is an arithmetic number, because the mean of its divisors is an integer number (161044128).

Almost surely, 2^11985004220 is an apocalyptic number.

11985004220 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 11985004220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15460236288).

11985004220 is an abundant number, since it is smaller than the sum of its proper divisors (18935468356).

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

11985004220 is a wasteful number, since it uses less digits than its factorization.

11985004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 11985004220 in words is "eleven billion, nine hundred eighty-five million, four thousand, two hundred twenty".