21200323334 has 4 divisors (see below), whose sum is σ = 31800485004. Its totient is φ = 10600161666.

The previous prime is 21200323289. The next prime is 21200323343. The reversal of 21200323334 is 43332300212.

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

It is a super-2 number, since 2×21200323334² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300080832 + ... + 5300080835.

It is an arithmetic number, because the mean of its divisors is an integer number (7950121251).

Almost surely, 2^21200323334 is an apocalyptic number.

21200323334 is a deficient number, since it is larger than the sum of its proper divisors (10600161670).

21200323334 is a wasteful number, since it uses less digits than its factorization.

21200323334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600161669.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21200323334 its reverse (43332300212), we get a palindrome (64532623546).

The spelling of 21200323334 in words is "twenty-one billion, two hundred million, three hundred twenty-three thousand, three hundred thirty-four".