21323302003100 has 72 divisors (see below), whose sum is σ = 46587532634160. Its totient is φ = 8471150138880.

The previous prime is 21323302003079. The next prime is 21323302003123. The reversal of 21323302003100 is 130020332312.

It is a super-2 number, since 2×21323302003100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 23233736 + ... + 24134064.

Almost surely, 2^{21323302003100} is an apocalyptic number.

21323302003100 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 21323302003100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23293766317080).

21323302003100 is an abundant number, since it is smaller than the sum of its proper divisors (25264230631060).

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

21323302003100 is a wasteful number, since it uses less digits than its factorization.

21323302003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901959 (or 901952 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21323302003100 its reverse (130020332312), we get a palindrome (21453322335412).

The spelling of 21323302003100 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred two million, three thousand, one hundred".