11220199980 has 96 divisors (see below), whose sum is σ = 34315626240. Its totient is φ = 2716634880.

The previous prime is 11220199967. The next prime is 11220199987. The reversal of 11220199980 is 8999102211.

It is not an unprimeable number, because it can be changed into a prime (11220199987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536887 + ... + 557393.

It is an arithmetic number, because the mean of its divisors is an integer number (357454440).

Almost surely, 2^11220199980 is an apocalyptic number.

11220199980 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 11220199980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17157813120).

11220199980 is an abundant number, since it is smaller than the sum of its proper divisors (23095426260).

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

11220199980 is a wasteful number, since it uses less digits than its factorization.

11220199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21359 (or 21357 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 11220199980 in words is "eleven billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred eighty".