221704113355434 has 24 divisors (see below), whose sum is σ = 480432283368960. Its totient is φ = 73890083257128.

The previous prime is 221704113355423. The next prime is 221704113355463. The reversal of 221704113355434 is 434553311407122.

221704113355434 is a `hidden beast` number, since 2 + 2 + 1 + 70 + 4 + 1 + 1 + 3 + 35 + 543 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 221704113355434.

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, 940533994 + ... + 940769685.

It is an arithmetic number, because the mean of its divisors is an integer number (20018011807040).

Almost surely, 2^{221704113355434} is an apocalyptic number.

221704113355434 is an abundant number, since it is smaller than the sum of its proper divisors (258728170013526).

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

221704113355434 is a wasteful number, since it uses less digits than its factorization.

221704113355434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881310234 (or 1881310231 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 221704113355434 in words is "two hundred twenty-one trillion, seven hundred four billion, one hundred thirteen million, three hundred fifty-five thousand, four hundred thirty-four".