21134412204 has 24 divisors (see below), whose sum is σ = 49792404480. Its totient is φ = 6976407504.

The previous prime is 21134412199. The next prime is 21134412241. The reversal of 21134412204 is 40221443112.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8548284 + ... + 8550755.

It is an arithmetic number, because the mean of its divisors is an integer number (2074683520).

Almost surely, 2^21134412204 is an apocalyptic number.

It is an amenable number.

21134412204 is an abundant number, since it is smaller than the sum of its proper divisors (28657992276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21134412204 is a wasteful number, since it uses less digits than its factorization.

21134412204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17099149 (or 17099147 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21134412204 its reverse (40221443112), we get a palindrome (61355855316).

The spelling of 21134412204 in words is "twenty-one billion, one hundred thirty-four million, four hundred twelve thousand, two hundred four".