21323333001000 has 64 divisors (see below), whose sum is σ = 66528798972480. Its totient is φ = 5686222132800.

The previous prime is 21323333000993. The next prime is 21323333001001. The reversal of 21323333001000 is 10033332312.

It is not an unprimeable number, because it can be changed into a prime (21323333001001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3553885834 + ... + 3553891833.

It is an arithmetic number, because the mean of its divisors is an integer number (1039512483945).

Almost surely, 2^{21323333001000} is an apocalyptic number.

21323333001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323333001000 is an abundant number, since it is smaller than the sum of its proper divisors (45205465971480).

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

21323333001000 is a wasteful number, since it uses less digits than its factorization.

21323333001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107777691 (or 7107777677 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21323333001000 its reverse (10033332312), we get a palindrome (21333366333312).

The spelling of 21323333001000 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-three million, one thousand".