21334042200 has 48 divisors (see below), whose sum is σ = 66135532680. Its totient is φ = 5689077760.

The previous prime is 21334042139. The next prime is 21334042211. The reversal of 21334042200 is 224043312.

It is a congruent number.

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, 17777769 + ... + 17778968.

Almost surely, 2^21334042200 is an apocalyptic number.

21334042200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334042200 is an abundant number, since it is smaller than the sum of its proper divisors (44801490480).

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

21334042200 is a wasteful number, since it uses less digits than its factorization.

21334042200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35556756 (or 35556747 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21334042200 its reverse (224043312), we get a palindrome (21558085512).

The spelling of 21334042200 in words is "twenty-one billion, three hundred thirty-four million, forty-two thousand, two hundred".