21323301000000 has 392 divisors, whose sum is σ = 74233327926240. Its totient is φ = 5386924800000.

The previous prime is 21323300999977. The next prime is 21323301000013. The reversal of 21323301000000 is 10332312.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 55 ways as a sum of consecutive naturals, for example, 56812954 + ... + 57187046.

Almost surely, 2^{21323301000000} is an apocalyptic number.

21323301000000 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 21323301000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37116663963120).

21323301000000 is an abundant number, since it is smaller than the sum of its proper divisors (52910026926240).

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

21323301000000 is an frugal number, since it uses more digits than its factorization.

21323301000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374157 (or 374122 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21323301000000 its reverse (10332312), we get a palindrome (21323311332312).

The spelling of 21323301000000 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred one million", and thus it is an aban number.