2123205600 has 72 divisors (see below), whose sum is σ = 6911042040. Its totient is φ = 566187520.

The previous prime is 2123205583. The next prime is 2123205611. The reversal of 2123205600 is 65023212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439935 + ... + 444734.

It is an arithmetic number, because the mean of its divisors is an integer number (95986695).

Almost surely, 2^2123205600 is an apocalyptic number.

2123205600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123205600 is an abundant number, since it is smaller than the sum of its proper divisors (4787836440).

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

2123205600 is a wasteful number, since it uses less digits than its factorization.

2123205600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884692 (or 884679 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2123205600 is about 46078.2551752993. The cubic root of 2123205600 is about 1285.2788183100.

Adding to 2123205600 its reverse (65023212), we get a palindrome (2188228812).

The spelling of 2123205600 in words is "two billion, one hundred twenty-three million, two hundred five thousand, six hundred".