21202433300 has 18 divisors (see below), whose sum is σ = 46009280478. Its totient is φ = 8480973280.

The previous prime is 21202433261. The next prime is 21202433323. The reversal of 21202433300 is 333420212.

It can be written as a sum of positive squares in 3 ways, for example, as 4761552016 + 16440881284 = 69004^2 + 128222^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106012067 + ... + 106012266.

Almost surely, 2^21202433300 is an apocalyptic number.

21202433300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202433300 is an abundant number, since it is smaller than the sum of its proper divisors (24806847178).

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

21202433300 is a wasteful number, since it uses less digits than its factorization.

21202433300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212024347 (or 212024340 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21202433300 its reverse (333420212), we get a palindrome (21535853512).

The spelling of 21202433300 in words is "twenty-one billion, two hundred two million, four hundred thirty-three thousand, three hundred".