221103331211 has 8 divisors (see below), whose sum is σ = 255051106560. Its totient is φ = 187745952168.

The previous prime is 221103331177. The next prime is 221103331247. The reversal of 221103331211 is 112133301122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221103331211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221103331271) 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, 147598271 + ... + 147599768.

It is an arithmetic number, because the mean of its divisors is an integer number (31881388320).

Almost surely, 2^221103331211 is an apocalyptic number.

221103331211 is a deficient number, since it is larger than the sum of its proper divisors (33947775349).

221103331211 is a wasteful number, since it uses less digits than its factorization.

221103331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295198153.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221103331211 its reverse (112133301122), we get a palindrome (333236632333).

The spelling of 221103331211 in words is "two hundred twenty-one billion, one hundred three million, three hundred thirty-one thousand, two hundred eleven".