221434132404 has 12 divisors (see below), whose sum is σ = 516679642304. Its totient is φ = 73811377464.

The previous prime is 221434132369. The next prime is 221434132421. The reversal of 221434132404 is 404231434122.

221434132404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9226422172 + ... + 9226422195.

Almost surely, 2^221434132404 is an apocalyptic number.

It is an amenable number.

221434132404 is an abundant number, since it is smaller than the sum of its proper divisors (295245509900).

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

221434132404 is a wasteful number, since it uses less digits than its factorization.

221434132404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18452844374 (or 18452844372 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 221434132404 its reverse (404231434122), we get a palindrome (625665566526).

The spelling of 221434132404 in words is "two hundred twenty-one billion, four hundred thirty-four million, one hundred thirty-two thousand, four hundred four".