21303144334 has 8 divisors (see below), whose sum is σ = 31972366728. Its totient is φ = 10645688760.

The previous prime is 21303144311. The next prime is 21303144407. The reversal of 21303144334 is 43344130312.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2937177 + ... + 2944420.

It is an arithmetic number, because the mean of its divisors is an integer number (3996545841).

Almost surely, 2^21303144334 is an apocalyptic number.

21303144334 is a deficient number, since it is larger than the sum of its proper divisors (10669222394).

21303144334 is a wasteful number, since it uses less digits than its factorization.

21303144334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883410.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21303144334 its reverse (43344130312), we get a palindrome (64647274646).

The spelling of 21303144334 in words is "twenty-one billion, three hundred three million, one hundred forty-four thousand, three hundred thirty-four".