2102221200 has 60 divisors (see below), whose sum is σ = 6734119088. Its totient is φ = 560592000.

The previous prime is 2102221157. The next prime is 2102221213. The reversal of 2102221200 is 21222012.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874726 + ... + 877125.

Almost surely, 2^2102221200 is an apocalyptic number.

2102221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102221200 is an abundant number, since it is smaller than the sum of its proper divisors (4631897888).

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

2102221200 is a wasteful number, since it uses less digits than its factorization.

2102221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751872 (or 1751861 counting only the distinct ones).

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

The square root of 2102221200 is about 45849.9858233348. The cubic root of 2102221200 is about 1281.0305015221.

Adding to 2102221200 its reverse (21222012), we get a palindrome (2123443212).

The spelling of 2102221200 in words is "two billion, one hundred two million, two hundred twenty-one thousand, two hundred".