221040434404 has 24 divisors (see below), whose sum is σ = 388974475008. Its totient is φ = 109906579200.

The previous prime is 221040434369. The next prime is 221040434413. The reversal of 221040434404 is 404434040122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304929 + ... + 731479.

It is an arithmetic number, because the mean of its divisors is an integer number (16207269792).

Almost surely, 2^221040434404 is an apocalyptic number.

It is an amenable number.

221040434404 is a deficient number, since it is larger than the sum of its proper divisors (167934040604).

221040434404 is a wasteful number, since it uses less digits than its factorization.

221040434404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427275 (or 427273 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221040434404 its reverse (404434040122), we get a palindrome (625474474526).

The spelling of 221040434404 in words is "two hundred twenty-one billion, forty million, four hundred thirty-four thousand, four hundred four".