2221199980 has 24 divisors (see below), whose sum is σ = 4679247888. Its totient is φ = 885674688.

The previous prime is 2221199977. The next prime is 2221199989. The reversal of 2221199980 is 899911222.

It is not an unprimeable number, because it can be changed into a prime (2221199989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168834 + ... + 181513.

It is an arithmetic number, because the mean of its divisors is an integer number (194968662).

Almost surely, 2^2221199980 is an apocalyptic number.

2221199980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221199980 is an abundant number, since it is smaller than the sum of its proper divisors (2458047908).

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

2221199980 is a wasteful number, since it uses less digits than its factorization.

2221199980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350673 (or 350671 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 2221199980 is about 47129.6083157923. The cubic root of 2221199980 is about 1304.7557525498.

The spelling of 2221199980 in words is "two billion, two hundred twenty-one million, one hundred ninety-nine thousand, nine hundred eighty".