21231330323300 has 36 divisors (see below), whose sum is σ = 46072211398080. Its totient is φ = 8492490729120.

The previous prime is 21231330323263. The next prime is 21231330323347. The reversal of 21231330323300 is 332303313212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21231330323300.

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, 27816161 + ... + 28569239.

Almost surely, 2^{21231330323300} is an apocalyptic number.

21231330323300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231330323300 is an abundant number, since it is smaller than the sum of its proper divisors (24840881074780).

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

21231330323300 is a wasteful number, since it uses less digits than its factorization.

21231330323300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035020 (or 1035013 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21231330323300 its reverse (332303313212), we get a palindrome (21563633636512).

The spelling of 21231330323300 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred thirty million, three hundred twenty-three thousand, three hundred".