221004432011 has 8 divisors (see below), whose sum is σ = 241137750000. Its totient is φ = 200878115040.

The previous prime is 221004431987. The next prime is 221004432017. The reversal of 221004432011 is 110234400122.

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

It is a cyclic number.

It is not a de Polignac number, because 221004432011 - 2¹⁰ = 221004430987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221004432017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684136 + ... + 1810613.

It is an arithmetic number, because the mean of its divisors is an integer number (30142218750).

Almost surely, 2^221004432011 is an apocalyptic number.

221004432011 is a deficient number, since it is larger than the sum of its proper divisors (20133317989).

221004432011 is a wasteful number, since it uses less digits than its factorization.

221004432011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500509.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221004432011 its reverse (110234400122), we get a palindrome (331238832133).

The spelling of 221004432011 in words is "two hundred twenty-one billion, four million, four hundred thirty-two thousand, eleven".