21200242302 has 96 divisors (see below), whose sum is σ = 48433282560. Its totient is φ = 6692616000.

The previous prime is 21200242291. The next prime is 21200242333. The reversal of 21200242302 is 20324200212.

21200242302 is a `hidden beast` number, since 2 + 120 + 0 + 242 + 302 = 666.

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

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 47 ways as a sum of consecutive naturals, for example, 7818727 + ... + 7821437.

It is an arithmetic number, because the mean of its divisors is an integer number (504513360).

Almost surely, 2^21200242302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21200242302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24216641280).

21200242302 is an abundant number, since it is smaller than the sum of its proper divisors (27233040258).

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

21200242302 is a wasteful number, since it uses less digits than its factorization.

21200242302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030 (or 3027 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21200242302 its reverse (20324200212), we get a palindrome (41524442514).

The spelling of 21200242302 in words is "twenty-one billion, two hundred million, two hundred forty-two thousand, three hundred two".