2102012200 has 24 divisors (see below), whose sum is σ = 4887178830. Its totient is φ = 840804800.

The previous prime is 2102012189. The next prime is 2102012203. The reversal of 2102012200 is 22102012.

It can be written as a sum of positive squares in 3 ways, for example, as 1407900484 + 694111716 = 37522^2 + 26346^2 .

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 (2102012203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5254831 + ... + 5255230.

Almost surely, 2^2102012200 is an apocalyptic number.

2102012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102012200 is an abundant number, since it is smaller than the sum of its proper divisors (2785166630).

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

2102012200 is a wasteful number, since it uses less digits than its factorization.

2102012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510077 (or 10510068 counting only the distinct ones).

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

The square root of 2102012200 is about 45847.7065947687. The cubic root of 2102012200 is about 1280.9880473395.

Adding to 2102012200 its reverse (22102012), we get a palindrome (2124114212).

The spelling of 2102012200 in words is "two billion, one hundred two million, twelve thousand, two hundred".