21033103300 has 54 divisors (see below), whose sum is σ = 50168325914. Its totient is φ = 7648396800.

The previous prime is 21033103253. The next prime is 21033103321. The reversal of 21033103300 is 330133012.

It can be written as a sum of positive squares in 3 ways, for example, as 134931456 + 20898171844 = 11616^2 + 144562^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 857037 + ... + 881236.

Almost surely, 2^21033103300 is an apocalyptic number.

21033103300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21033103300 is an abundant number, since it is smaller than the sum of its proper divisors (29135222614).

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

21033103300 is a wasteful number, since it uses less digits than its factorization.

21033103300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738309 (or 1738291 counting only the distinct ones).

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

Adding to 21033103300 its reverse (330133012), we get a palindrome (21363236312).

The spelling of 21033103300 in words is "twenty-one billion, thirty-three million, one hundred three thousand, three hundred".