21202303233 has 32 divisors (see below), whose sum is σ = 29856752640. Its totient is φ = 13357206720.

The previous prime is 21202303223. The next prime is 21202303237. The reversal of 21202303233 is 33230320212.

It is not a de Polignac number, because 21202303233 - 2¹² = 21202299137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202303237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2064810 + ... + 2075052.

It is an arithmetic number, because the mean of its divisors is an integer number (933023520).

Almost surely, 2^21202303233 is an apocalyptic number.

21202303233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21202303233 is a deficient number, since it is larger than the sum of its proper divisors (8654449407).

21202303233 is a wasteful number, since it uses less digits than its factorization.

21202303233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21202303233 its reverse (33230320212), we get a palindrome (54432623445).

The spelling of 21202303233 in words is "twenty-one billion, two hundred two million, three hundred three thousand, two hundred thirty-three".