2201921220 has 24 divisors (see below), whose sum is σ = 6165379584. Its totient is φ = 587178976.

The previous prime is 2201921213. The next prime is 2201921237. The reversal of 2201921220 is 221291022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18349284 + ... + 18349403.

It is an arithmetic number, because the mean of its divisors is an integer number (256890816).

Almost surely, 2^2201921220 is an apocalyptic number.

2201921220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201921220 is an abundant number, since it is smaller than the sum of its proper divisors (3963458364).

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

2201921220 is a wasteful number, since it uses less digits than its factorization.

2201921220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36698699 (or 36698697 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2201921220 is about 46924.6334029367. The cubic root of 2201921220 is about 1300.9699309861.

The spelling of 2201921220 in words is "two billion, two hundred one million, nine hundred twenty-one thousand, two hundred twenty".