21732012300 has 144 divisors (see below), whose sum is σ = 65955778560. Its totient is φ = 5514178560.

The previous prime is 21732012193. The next prime is 21732012301. The reversal of 21732012300 is 321023712.

It is not an unprimeable number, because it can be changed into a prime (21732012301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1323541 + ... + 1339859.

It is an arithmetic number, because the mean of its divisors is an integer number (458026240).

Almost surely, 2^21732012300 is an apocalyptic number.

21732012300 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 21732012300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32977889280).

21732012300 is an abundant number, since it is smaller than the sum of its proper divisors (44223766260).

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

21732012300 is a wasteful number, since it uses less digits than its factorization.

21732012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16552 (or 16545 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The spelling of 21732012300 in words is "twenty-one billion, seven hundred thirty-two million, twelve thousand, three hundred".