21220000300 has 36 divisors (see below), whose sum is σ = 46074872200. Its totient is φ = 8482936320.

The previous prime is 21220000289. The next prime is 21220000301. The reversal of 21220000300 is 300002212.

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 (21220000301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107452 + ... + 232348.

Almost surely, 2^21220000300 is an apocalyptic number.

21220000300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220000300 is an abundant number, since it is smaller than the sum of its proper divisors (24854871900).

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

21220000300 is a wasteful number, since it uses less digits than its factorization.

21220000300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126610 (or 126603 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 21220000300 its reverse (300002212), we get a palindrome (21520002512).

The spelling of 21220000300 in words is "twenty-one billion, two hundred twenty million, three hundred", and thus it is an aban number.