21202210233 has 48 divisors (see below), whose sum is σ = 32002426560. Its totient is φ = 13513661568.

The previous prime is 21202210231. The next prime is 21202210241. The reversal of 21202210233 is 33201220212.

21202210233 is a `hidden beast` number, since 21 + 202 + 210 + 233 = 666.

It is not a de Polignac number, because 21202210233 - 2¹ = 21202210231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202210231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11355366 + ... + 11357232.

It is an arithmetic number, because the mean of its divisors is an integer number (666717220).

Almost surely, 2^21202210233 is an apocalyptic number.

It is an amenable number.

21202210233 is a deficient number, since it is larger than the sum of its proper divisors (10800216327).

21202210233 is a wasteful number, since it uses less digits than its factorization.

21202210233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21202210233 its reverse (33201220212), we get a palindrome (54403430445).

The spelling of 21202210233 in words is "twenty-one billion, two hundred two million, two hundred ten thousand, two hundred thirty-three".