221030111111 has 8 divisors (see below), whose sum is σ = 223174757520. Its totient is φ = 218886926848.

The previous prime is 221030111051. The next prime is 221030111123. The reversal of 221030111111 is 111111030122.

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 221030111111 - 2³⁰ = 219956369287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030111411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60506 + ... + 667623.

It is an arithmetic number, because the mean of its divisors is an integer number (27896844690).

Almost surely, 2^221030111111 is an apocalyptic number.

221030111111 is a deficient number, since it is larger than the sum of its proper divisors (2144646409).

221030111111 is a wasteful number, since it uses less digits than its factorization.

221030111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731073.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 221030111111 its reverse (111111030122), we get a palindrome (332141141233).

The spelling of 221030111111 in words is "two hundred twenty-one billion, thirty million, one hundred eleven thousand, one hundred eleven".