21403303300 has 36 divisors (see below), whose sum is σ = 46473557620. Its totient is φ = 8556088320.

The previous prime is 21403303253. The next prime is 21403303357. The reversal of 21403303300 is 330330412.

It can be written as a sum of positive squares in 6 ways, for example, as 4623728004 + 16779575296 = 67998^2 + 129536^2 .

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, 101116 + ... + 230284.

Almost surely, 2^21403303300 is an apocalyptic number.

21403303300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21403303300 is an abundant number, since it is smaller than the sum of its proper divisors (25070254320).

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

21403303300 is a wasteful number, since it uses less digits than its factorization.

21403303300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130840 (or 130833 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21403303300 its reverse (330330412), we get a palindrome (21733633712).

The spelling of 21403303300 in words is "twenty-one billion, four hundred three million, three hundred three thousand, three hundred".