221030221311 has 32 divisors (see below), whose sum is σ = 333996995840. Its totient is φ = 144425397600.

The previous prime is 221030221213. The next prime is 221030221319. The reversal of 221030221311 is 113122030122.

221030221311 is a `hidden beast` number, since 22 + 10 + 302 + 21 + 311 = 666.

It is not a de Polignac number, because 221030221311 - 2¹⁰ = 221030220287 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 (221030221319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228996 + ... + 703206.

It is an arithmetic number, because the mean of its divisors is an integer number (10437406120).

Almost surely, 2^221030221311 is an apocalyptic number.

221030221311 is a deficient number, since it is larger than the sum of its proper divisors (112966774529).

221030221311 is a wasteful number, since it uses less digits than its factorization.

221030221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474564 (or 474558 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221030221311 its reverse (113122030122), we get a palindrome (334152251433).

The spelling of 221030221311 in words is "two hundred twenty-one billion, thirty million, two hundred twenty-one thousand, three hundred eleven".