221112122222211 has 16 divisors (see below), whose sum is σ = 330310000766208. Its totient is φ = 130385526616800.

The previous prime is 221112122222209. The next prime is 221112122222227. The reversal of 221112122222211 is 112222221211122.

It is not a de Polignac number, because 221112122222211 - 2¹ = 221112122222209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112122222711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90545503375 + ... + 90545505816.

It is an arithmetic number, because the mean of its divisors is an integer number (20644375047888).

Almost surely, 2^{221112122222211} is an apocalyptic number.

221112122222211 is a deficient number, since it is larger than the sum of its proper divisors (109197878543997).

221112122222211 is a wasteful number, since it uses less digits than its factorization.

221112122222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181091009242.

The product of its digits is 512, while the sum is 24.

Adding to 221112122222211 its reverse (112222221211122), we get a palindrome (333334343433333).

The spelling of 221112122222211 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".