221131222110211 has 8 divisors (see below), whose sum is σ = 253206466560864. Its totient is φ = 189177245125440.

The previous prime is 221131222110079. The next prime is 221131222110247. The reversal of 221131222110211 is 112011222131122.

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 221131222110211 - 2³¹ = 221129074626563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221131222110251) 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, 30316862560 + ... + 30316869853.

It is an arithmetic number, because the mean of its divisors is an integer number (31650808320108).

Almost surely, 2^{221131222110211} is an apocalyptic number.

221131222110211 is a deficient number, since it is larger than the sum of its proper divisors (32075244450653).

221131222110211 is an equidigital number, since it uses as much as digits as its factorization.

221131222110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60633732941.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 221131222110211 its reverse (112011222131122), we get a palindrome (333142444241333).

The spelling of 221131222110211 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, two hundred twenty-two million, one hundred ten thousand, two hundred eleven".