21213103323000 has 64 divisors (see below), whose sum is σ = 66184882377120. Its totient is φ = 5656827552000.

The previous prime is 21213103322941. The next prime is 21213103323077. The reversal of 21213103323000 is 32330131212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535514221 + ... + 3535520220.

Almost surely, 2^{21213103323000} is an apocalyptic number.

21213103323000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21213103323000 is an abundant number, since it is smaller than the sum of its proper divisors (44971779054120).

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

21213103323000 is a wasteful number, since it uses less digits than its factorization.

21213103323000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071034465 (or 7071034451 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21213103323000 its reverse (32330131212), we get a palindrome (21245433454212).

The spelling of 21213103323000 in words is "twenty-one trillion, two hundred thirteen billion, one hundred three million, three hundred twenty-three thousand".