21022002300 has 288 divisors, whose sum is σ = 68910589440. Its totient is φ = 4909132800.

The previous prime is 21022002271. The next prime is 21022002319. The reversal of 21022002300 is 320022012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11749806 + ... + 11751594.

It is an arithmetic number, because the mean of its divisors is an integer number (239272880).

Almost surely, 2^21022002300 is an apocalyptic number.

21022002300 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 21022002300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34455294720).

21022002300 is an abundant number, since it is smaller than the sum of its proper divisors (47888587140).

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

21022002300 is a wasteful number, since it uses less digits than its factorization.

21022002300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 21022002300 its reverse (320022012), we get a palindrome (21342024312).

The spelling of 21022002300 in words is "twenty-one billion, twenty-two million, two thousand, three hundred".