21223203333 has 24 divisors (see below), whose sum is σ = 29599692192. Its totient is φ = 13525282848.

The previous prime is 21223203277. The next prime is 21223203373. The reversal of 21223203333 is 33330232212.

It is not a de Polignac number, because 21223203333 - 2¹⁶ = 21223137797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223203373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3509010 + ... + 3515052.

It is an arithmetic number, because the mean of its divisors is an integer number (1233320508).

Almost surely, 2^21223203333 is an apocalyptic number.

21223203333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21223203333 is a deficient number, since it is larger than the sum of its proper divisors (8376488859).

21223203333 is a wasteful number, since it uses less digits than its factorization.

21223203333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 21223203333 its reverse (33330232212), we get a palindrome (54553435545).

The spelling of 21223203333 in words is "twenty-one billion, two hundred twenty-three million, two hundred three thousand, three hundred thirty-three".