2201621250 has 80 divisors (see below), whose sum is σ = 5580463680. Its totient is φ = 578760000.

The previous prime is 2201621221. The next prime is 2201621251. The reversal of 2201621250 is 521261022.

It is a happy number.

It is a super-2 number, since 2×2201621250² = 9694272256903125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2201621251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 262116 + ... + 270384.

It is an arithmetic number, because the mean of its divisors is an integer number (69755796).

Almost surely, 2^2201621250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2201621250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790231840).

2201621250 is an abundant number, since it is smaller than the sum of its proper divisors (3378842430).

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

2201621250 is an equidigital number, since it uses as much as digits as its factorization.

2201621250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8365 (or 8350 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2201621250 is about 46921.4369984552. The cubic root of 2201621250 is about 1300.9108508111.

Adding to 2201621250 its reverse (521261022), we get a palindrome (2722882272).

The spelling of 2201621250 in words is "two billion, two hundred one million, six hundred twenty-one thousand, two hundred fifty".