21030133300 has 72 divisors (see below), whose sum is σ = 50384087712. Its totient is φ = 7555152000.

The previous prime is 21030133279. The next prime is 21030133303. The reversal of 21030133300 is 333103012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030133303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23871 + ... + 206470.

It is an arithmetic number, because the mean of its divisors is an integer number (699778996).

Almost surely, 2^21030133300 is an apocalyptic number.

21030133300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030133300 is an abundant number, since it is smaller than the sum of its proper divisors (29353954412).

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

21030133300 is a wasteful number, since it uses less digits than its factorization.

21030133300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230449 (or 230442 counting only the distinct ones).

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

Adding to 21030133300 its reverse (333103012), we get a palindrome (21363236312).

The spelling of 21030133300 in words is "twenty-one billion, thirty million, one hundred thirty-three thousand, three hundred".