21000203302302 has 192 divisors, whose sum is σ = 56191230576000. Its totient is φ = 5646287969280.

The previous prime is 21000203302301. The next prime is 21000203302307. The reversal of 21000203302302 is 20320330200012.

It is a happy number.

21000203302302 is a `hidden beast` number, since 2 + 10 + 0 + 0 + 20 + 330 + 2 + 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 not an unprimeable number, because it can be changed into a prime (21000203302301) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1144977652 + ... + 1144995992.

It is an arithmetic number, because the mean of its divisors is an integer number (292662659250).

Almost surely, 2^{21000203302302} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21000203302302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28095615288000).

21000203302302 is an abundant number, since it is smaller than the sum of its proper divisors (35191027273698).

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

21000203302302 is a wasteful number, since it uses less digits than its factorization.

21000203302302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29296 (or 29279 counting only the distinct ones).

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

Adding to 21000203302302 its reverse (20320330200012), we get a palindrome (41320533502314).

It can be divided in two parts, 21000 and 203302302, that added together give a palindrome (203323302).

The spelling of 21000203302302 in words is "twenty-one trillion, two hundred three million, three hundred two thousand, three hundred two".