221043020434 has 8 divisors (see below), whose sum is σ = 342260160768. Its totient is φ = 106956300180.

The previous prime is 221043020371. The next prime is 221043020459. The reversal of 221043020434 is 434020340122.

It is a happy number.

221043020434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221043020399 and 221043020408.

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, 1782604942 + ... + 1782605065.

It is an arithmetic number, because the mean of its divisors is an integer number (42782520096).

Almost surely, 2^221043020434 is an apocalyptic number.

221043020434 is a deficient number, since it is larger than the sum of its proper divisors (121217140334).

221043020434 is a wasteful number, since it uses less digits than its factorization.

221043020434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565210040.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221043020434 its reverse (434020340122), we get a palindrome (655063360556).

The spelling of 221043020434 in words is "two hundred twenty-one billion, forty-three million, twenty thousand, four hundred thirty-four".