221232230011 has 4 divisors (see below), whose sum is σ = 238250093872. Its totient is φ = 204214366152.

The previous prime is 221232229973. The next prime is 221232230017. The reversal of 221232230011 is 110032232122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221232230011 - 2⁹ = 221232229499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221232230017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508931911 + ... + 8508931936.

It is an arithmetic number, because the mean of its divisors is an integer number (59562523468).

Almost surely, 2^221232230011 is an apocalyptic number.

221232230011 is a deficient number, since it is larger than the sum of its proper divisors (17017863861).

221232230011 is a wasteful number, since it uses less digits than its factorization.

221232230011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017863860.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221232230011 its reverse (110032232122), we get a palindrome (331264462133).

The spelling of 221232230011 in words is "two hundred twenty-one billion, two hundred thirty-two million, two hundred thirty thousand, eleven".