21003300424300 has 72 divisors (see below), whose sum is σ = 46024125545216. Its totient is φ = 8318946404160.

The previous prime is 21003300424297. The next prime is 21003300424321. The reversal of 21003300424300 is 342400330012.

It is a happy number.

It is a super-2 number, since 2×21003300424300² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112207387 + ... + 112394413.

Almost surely, 2^{21003300424300} is an apocalyptic number.

21003300424300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21003300424300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23012062772608).

21003300424300 is an abundant number, since it is smaller than the sum of its proper divisors (25020825120916).

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

21003300424300 is a wasteful number, since it uses less digits than its factorization.

21003300424300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198047 (or 198040 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21003300424300 its reverse (342400330012), we get a palindrome (21345700754312).

The spelling of 21003300424300 in words is "twenty-one trillion, three billion, three hundred million, four hundred twenty-four thousand, three hundred".