2123204200 has 96 divisors (see below), whose sum is σ = 5335205400. Its totient is φ = 781148160.

The previous prime is 2123204183. The next prime is 2123204207. The reversal of 2123204200 is 24023212.

It can be written as a sum of positive squares in 12 ways, for example, as 193710724 + 1929493476 = 13918^2 + 43926^2 .

It is not an unprimeable number, because it can be changed into a prime (2123204207) 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, 812496 + ... + 815104.

Almost surely, 2^2123204200 is an apocalyptic number.

2123204200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123204200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667602700).

2123204200 is an abundant number, since it is smaller than the sum of its proper divisors (3212001200).

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

2123204200 is a wasteful number, since it uses less digits than its factorization.

2123204200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2123204200 is about 46078.2399837494. The cubic root of 2123204200 is about 1285.2785358141.

Adding to 2123204200 its reverse (24023212), we get a palindrome (2147227412).

The spelling of 2123204200 in words is "two billion, one hundred twenty-three million, two hundred four thousand, two hundred".