21233003433 has 16 divisors (see below), whose sum is σ = 28754400576. Its totient is φ = 13933782720.

The previous prime is 21233003377. The next prime is 21233003459. The reversal of 21233003433 is 33430033212.

It is a happy number.

It is not a de Polignac number, because 21233003433 - 2¹⁴ = 21232987049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233003933) 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, 239335 + ... + 315827.

It is an arithmetic number, because the mean of its divisors is an integer number (1797150036).

Almost surely, 2^21233003433 is an apocalyptic number.

It is an amenable number.

21233003433 is a deficient number, since it is larger than the sum of its proper divisors (7521397143).

21233003433 is a wasteful number, since it uses less digits than its factorization.

21233003433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77944.

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

Adding to 21233003433 its reverse (33430033212), we get a palindrome (54663036645).

The spelling of 21233003433 in words is "twenty-one billion, two hundred thirty-three million, three thousand, four hundred thirty-three".