21113200334 has 4 divisors (see below), whose sum is σ = 31669800504. Its totient is φ = 10556600166.

The previous prime is 21113200333. The next prime is 21113200343. The reversal of 21113200334 is 43300231112.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113200333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278300082 + ... + 5278300085.

It is an arithmetic number, because the mean of its divisors is an integer number (7917450126).

Almost surely, 2^21113200334 is an apocalyptic number.

21113200334 is a deficient number, since it is larger than the sum of its proper divisors (10556600170).

21113200334 is a wasteful number, since it uses less digits than its factorization.

21113200334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556600169.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21113200334 its reverse (43300231112), we get a palindrome (64413431446).

The spelling of 21113200334 in words is "twenty-one billion, one hundred thirteen million, two hundred thousand, three hundred thirty-four".