21202033334 has 4 divisors (see below), whose sum is σ = 31803050004. Its totient is φ = 10601016666.

The previous prime is 21202033331. The next prime is 21202033357. The reversal of 21202033334 is 43333020212.

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 (21202033331) 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 as a sum of consecutive naturals, namely, 5300508332 + ... + 5300508335.

It is an arithmetic number, because the mean of its divisors is an integer number (7950762501).

Almost surely, 2^21202033334 is an apocalyptic number.

21202033334 is a deficient number, since it is larger than the sum of its proper divisors (10601016670).

21202033334 is a wasteful number, since it uses less digits than its factorization.

21202033334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601016669.

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

Adding to 21202033334 its reverse (43333020212), we get a palindrome (64535053546).

The spelling of 21202033334 in words is "twenty-one billion, two hundred two million, thirty-three thousand, three hundred thirty-four".