22000199980 has 96 divisors (see below), whose sum is σ = 50916096000. Its totient is φ = 7918594560.

The previous prime is 22000199971. The next prime is 22000199981. The reversal of 22000199980 is 8999100022.

22000199980 is a modest number, since divided by 199980 gives 220 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22000199981) 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, 12506341 + ... + 12508099.

It is an arithmetic number, because the mean of its divisors is an integer number (530376000).

Almost surely, 2^22000199980 is an apocalyptic number.

22000199980 is a gapful number since it is divisible by the number (20) 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 22000199980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25458048000).

22000199980 is an abundant number, since it is smaller than the sum of its proper divisors (28915896020).

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

22000199980 is a wasteful number, since it uses less digits than its factorization.

22000199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 22000199980 in words is "twenty-two billion, one hundred ninety-nine thousand, nine hundred eighty".