21233010208 has 24 divisors (see below), whose sum is σ = 41814951948. Its totient is φ = 10613339904.

The previous prime is 21233010193. The next prime is 21233010209. The reversal of 21233010208 is 80201033212.

It can be written as a sum of positive squares in 2 ways, for example, as 20905689744 + 327320464 = 144588^2 + 18092^2 .

It is not an unprimeable number, because it can be changed into a prime (21233010209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12010 + ... + 206422.

Almost surely, 2^21233010208 is an apocalyptic number.

It is an amenable number.

21233010208 is a deficient number, since it is larger than the sum of its proper divisors (20581941740).

21233010208 is a wasteful number, since it uses less digits than its factorization.

21233010208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197836 (or 197828 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 21233010208 in words is "twenty-one billion, two hundred thirty-three million, ten thousand, two hundred eight".