21243133302 has 32 divisors (see below), whose sum is σ = 44242433280. Its totient is φ = 6791584800.

The previous prime is 21243133291. The next prime is 21243133319. The reversal of 21243133302 is 20333134212.

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 15 ways as a sum of consecutive naturals, for example, 377988 + ... + 430535.

It is an arithmetic number, because the mean of its divisors is an integer number (1382576040).

Almost surely, 2^21243133302 is an apocalyptic number.

21243133302 is an abundant number, since it is smaller than the sum of its proper divisors (22999299978).

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

21243133302 is a wasteful number, since it uses less digits than its factorization.

21243133302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808708.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21243133302 its reverse (20333134212), we get a palindrome (41576267514).

The spelling of 21243133302 in words is "twenty-one billion, two hundred forty-three million, one hundred thirty-three thousand, three hundred two".