21201234333 has 16 divisors (see below), whose sum is σ = 28698552960. Its totient is φ = 13920590016.

The previous prime is 21201234221. The next prime is 21201234347. The reversal of 21201234333 is 33343210212.

It is not a de Polignac number, because 21201234333 - 2⁹ = 21201233821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201234833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139510 + ... + 248727.

It is an arithmetic number, because the mean of its divisors is an integer number (1793659560).

Almost surely, 2^21201234333 is an apocalyptic number.

It is an amenable number.

21201234333 is a deficient number, since it is larger than the sum of its proper divisors (7497318627).

21201234333 is a wasteful number, since it uses less digits than its factorization.

21201234333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388516.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21201234333 its reverse (33343210212), we get a palindrome (54544444545).

The spelling of 21201234333 in words is "twenty-one billion, two hundred one million, two hundred thirty-four thousand, three hundred thirty-three".