221022110101111 has 16 divisors (see below), whose sum is σ = 257776890179328. Its totient is φ = 187273809072000.

The previous prime is 221022110101099. The next prime is 221022110101171. The reversal of 221022110101111 is 111101011220122.

It is not a de Polignac number, because 221022110101111 - 2⁷ = 221022110100983 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 (221022110101171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5737536165 + ... + 5737574686.

It is an arithmetic number, because the mean of its divisors is an integer number (16111055636208).

Almost surely, 2^{221022110101111} is an apocalyptic number.

221022110101111 is a deficient number, since it is larger than the sum of its proper divisors (36754780078217).

221022110101111 is a wasteful number, since it uses less digits than its factorization.

221022110101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11475110982.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 221022110101111 its reverse (111101011220122), we get a palindrome (332123121321233).

The spelling of 221022110101111 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred ten million, one hundred one thousand, one hundred eleven".