21322320300 has 108 divisors (see below), whose sum is σ = 67425398040. Its totient is φ = 5635607040.

The previous prime is 21322320287. The next prime is 21322320307. The reversal of 21322320300 is 302322312.

It is a happy number.

21322320300 is a `hidden beast` number, since 2 + 132 + 232 + 0 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21322320307) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 3130 + ... + 206529.

Almost surely, 2^21322320300 is an apocalyptic number.

21322320300 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 21322320300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33712699020).

21322320300 is an abundant number, since it is smaller than the sum of its proper divisors (46103077740).

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

21322320300 is a wasteful number, since it uses less digits than its factorization.

21322320300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209792 (or 209782 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21322320300 its reverse (302322312), we get a palindrome (21624642612).

The spelling of 21322320300 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty thousand, three hundred".