21302122200 has 96 divisors (see below), whose sum is σ = 66372158160. Its totient is φ = 5651699200.

The previous prime is 21302122183. The next prime is 21302122217. The reversal of 21302122200 is 222120312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21302122183) and next prime (21302122217).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21302122200.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28090 + ... + 208310.

Almost surely, 2^21302122200 is an apocalyptic number.

21302122200 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 21302122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33186079080).

21302122200 is an abundant number, since it is smaller than the sum of its proper divisors (45070035960).

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

21302122200 is a wasteful number, since it uses less digits than its factorization.

21302122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180437 (or 180428 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21302122200 its reverse (222120312), we get a palindrome (21524242512).

The spelling of 21302122200 in words is "twenty-one billion, three hundred two million, one hundred twenty-two thousand, two hundred".