21330303100 has 36 divisors (see below), whose sum is σ = 47045570488. Its totient is φ = 8392248000.

The previous prime is 21330303073. The next prime is 21330303133. The reversal of 21330303100 is 130303312.

It is a super-2 number, since 2×21330303100² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 1742286 + ... + 1754485.

Almost surely, 2^21330303100 is an apocalyptic number.

21330303100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330303100 is an abundant number, since it is smaller than the sum of its proper divisors (25715267388).

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

21330303100 is a wasteful number, since it uses less digits than its factorization.

21330303100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496846 (or 3496839 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21330303100 its reverse (130303312), we get a palindrome (21460606412).

The spelling of 21330303100 in words is "twenty-one billion, three hundred thirty million, three hundred three thousand, one hundred".