21332423338 has 8 divisors (see below), whose sum is σ = 32523202980. Its totient is φ = 10491355680.

The previous prime is 21332423237. The next prime is 21332423339. The reversal of 21332423338 is 83332423312.

It can be written as a sum of positive squares in 2 ways, for example, as 16081536969 + 5250886369 = 126813^2 + 72463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21332423339) 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 3 ways as a sum of consecutive naturals, for example, 87427843 + ... + 87428086.

Almost surely, 2^21332423338 is an apocalyptic number.

21332423338 is a deficient number, since it is larger than the sum of its proper divisors (11190779642).

21332423338 is a wasteful number, since it uses less digits than its factorization.

21332423338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174855992.

The product of its digits is 62208, while the sum is 34.

The spelling of 21332423338 in words is "twenty-one billion, three hundred thirty-two million, four hundred twenty-three thousand, three hundred thirty-eight".