21021122300 has 36 divisors (see below), whose sum is σ = 46728425856. Its totient is φ = 8203363200.

The previous prime is 21021122299. The next prime is 21021122357. The reversal of 21021122300 is 322112012.

It is a happy number.

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, 2559452 + ... + 2567651.

Almost surely, 2^21021122300 is an apocalyptic number.

21021122300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21021122300 is an abundant number, since it is smaller than the sum of its proper divisors (25707303556).

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

21021122300 is a wasteful number, since it uses less digits than its factorization.

21021122300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127158 (or 5127151 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21021122300 its reverse (322112012), we get a palindrome (21343234312).

The spelling of 21021122300 in words is "twenty-one billion, twenty-one million, one hundred twenty-two thousand, three hundred".