2201021200 has 90 divisors (see below), whose sum is σ = 6151347546. Its totient is φ = 754629120.

The previous prime is 2201021197. The next prime is 2201021201. The reversal of 2201021200 is 21201022.

It can be written as a sum of positive squares in 3 ways, for example, as 94945536 + 2106075664 = 9744^2 + 45892^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2201021201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36549 + ... + 75748.

Almost surely, 2^2201021200 is an apocalyptic number.

2201021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201021200 is an abundant number, since it is smaller than the sum of its proper divisors (3950326346).

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

2201021200 is a wasteful number, since it uses less digits than its factorization.

2201021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112329 (or 112311 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2201021200 is about 46915.0423638304. The cubic root of 2201021200 is about 1300.7926526901.

Adding to 2201021200 its reverse (21201022), we get a palindrome (2222222222).

The spelling of 2201021200 in words is "two billion, two hundred one million, twenty-one thousand, two hundred".