21324132334 has 4 divisors (see below), whose sum is σ = 31986198504. Its totient is φ = 10662066166.

The previous prime is 21324132317. The next prime is 21324132341. The reversal of 21324132334 is 43323142312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331033082 + ... + 5331033085.

It is an arithmetic number, because the mean of its divisors is an integer number (7996549626).

Almost surely, 2^21324132334 is an apocalyptic number.

21324132334 is a deficient number, since it is larger than the sum of its proper divisors (10662066170).

21324132334 is a wasteful number, since it uses less digits than its factorization.

21324132334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662066169.

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

Adding to 21324132334 its reverse (43323142312), we get a palindrome (64647274646).

The spelling of 21324132334 in words is "twenty-one billion, three hundred twenty-four million, one hundred thirty-two thousand, three hundred thirty-four".