21202003233 has 32 divisors (see below), whose sum is σ = 33624000000. Its totient is φ = 13163758416.

The previous prime is 21202003231. The next prime is 21202003261. The reversal of 21202003233 is 33230020212.

It is a happy number.

It is not a de Polignac number, because 21202003233 - 2¹ = 21202003231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202003231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319983 + ... + 380516.

It is an arithmetic number, because the mean of its divisors is an integer number (1050750000).

Almost surely, 2^21202003233 is an apocalyptic number.

It is an amenable number.

21202003233 is a deficient number, since it is larger than the sum of its proper divisors (12421996767).

21202003233 is a wasteful number, since it uses less digits than its factorization.

21202003233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700586 (or 700580 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21202003233 its reverse (33230020212), we get a palindrome (54432023445).

The spelling of 21202003233 in words is "twenty-one billion, two hundred two million, three thousand, two hundred thirty-three".