21334233189 has 16 divisors (see below), whose sum is σ = 29317719872. Its totient is φ = 13789502208.

The previous prime is 21334233187. The next prime is 21334233229. The reversal of 21334233189 is 98133243312.

It is not a de Polignac number, because 21334233189 - 2¹ = 21334233187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334233187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308164 + ... + 370989.

It is an arithmetic number, because the mean of its divisors is an integer number (1832357492).

Almost surely, 2^21334233189 is an apocalyptic number.

It is an amenable number.

21334233189 is a deficient number, since it is larger than the sum of its proper divisors (7983486683).

21334233189 is a wasteful number, since it uses less digits than its factorization.

21334233189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679476.

The product of its digits is 93312, while the sum is 39.

The spelling of 21334233189 in words is "twenty-one billion, three hundred thirty-four million, two hundred thirty-three thousand, one hundred eighty-nine".