2201221200 has 120 divisors (see below), whose sum is σ = 7466093568. Its totient is φ = 552458240.

The previous prime is 2201221199. The next prime is 2201221201. The reversal of 2201221200 is 21221022.

It is an interprime number because it is at equal distance from previous prime (2201221199) and next prime (2201221201).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201221201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33552 + ... + 74351.

Almost surely, 2^2201221200 is an apocalyptic number.

2201221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201221200 is an abundant number, since it is smaller than the sum of its proper divisors (5264872368).

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

2201221200 is a wasteful number, since it uses less digits than its factorization.

2201221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107941 (or 107930 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2201221200 is about 46917.1738279279. The cubic root of 2201221200 is about 1300.8320511673.

Adding to 2201221200 its reverse (21221022), we get a palindrome (2222442222).

The spelling of 2201221200 in words is "two billion, two hundred one million, two hundred twenty-one thousand, two hundred".