12204421434 has 24 divisors (see below), whose sum is σ = 27295911552. Its totient is φ = 3936909960.

The previous prime is 12204421429. The next prime is 12204421441. The reversal of 12204421434 is 43412440221.

12204421434 is a `hidden beast` number, since 1 + 2 + 204 + 4 + 21 + 434 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12204421398 and 12204421407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10935304 + ... + 10936419.

It is an arithmetic number, because the mean of its divisors is an integer number (1137329648).

Almost surely, 2^12204421434 is an apocalyptic number.

12204421434 is an abundant number, since it is smaller than the sum of its proper divisors (15091490118).

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

12204421434 is a wasteful number, since it uses less digits than its factorization.

12204421434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21871762 (or 21871759 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12204421434 its reverse (43412440221), we get a palindrome (55616861655).

The spelling of 12204421434 in words is "twelve billion, two hundred four million, four hundred twenty-one thousand, four hundred thirty-four".