21323244022 has 8 divisors (see below), whose sum is σ = 31986704376. Its totient is φ = 10661009232.

The previous prime is 21323244017. The next prime is 21323244023. The reversal of 21323244022 is 22044232312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323244023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261583 + ... + 333274.

It is an arithmetic number, because the mean of its divisors is an integer number (3998338047).

Almost surely, 2^21323244022 is an apocalyptic number.

21323244022 is a deficient number, since it is larger than the sum of its proper divisors (10663460354).

21323244022 is a wasteful number, since it uses less digits than its factorization.

21323244022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612782.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21323244022 its reverse (22044232312), we get a palindrome (43367476334).

The spelling of 21323244022 in words is "twenty-one billion, three hundred twenty-three million, two hundred forty-four thousand, twenty-two".