21110432204 has 36 divisors (see below), whose sum is σ = 38964125760. Its totient is φ = 9997260960.

The previous prime is 21110432191. The next prime is 21110432257. The reversal of 21110432204 is 40223401112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235382 + ... + 312450.

Almost surely, 2^21110432204 is an apocalyptic number.

It is an amenable number.

21110432204 is a deficient number, since it is larger than the sum of its proper divisors (17853693556).

21110432204 is a wasteful number, since it uses less digits than its factorization.

21110432204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77198 (or 77149 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21110432204 its reverse (40223401112), we get a palindrome (61333833316).

The spelling of 21110432204 in words is "twenty-one billion, one hundred ten million, four hundred thirty-two thousand, two hundred four".