2221101111 has 4 divisors (see below), whose sum is σ = 2961468152. Its totient is φ = 1480734072.

The previous prime is 2221101101. The next prime is 2221101133. The reversal of 2221101111 is 1111011222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2221101111 - 2¹⁹ = 2220576823 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 (2221101101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370183516 + ... + 370183521.

It is an arithmetic number, because the mean of its divisors is an integer number (740367038).

Almost surely, 2^2221101111 is an apocalyptic number.

2221101111 is a deficient number, since it is larger than the sum of its proper divisors (740367041).

2221101111 is an equidigital number, since it uses as much as digits as its factorization.

2221101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740367040.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2221101111 is about 47128.5593987340. The cubic root of 2221101111 is about 1304.7363933728.

Adding to 2221101111 its reverse (1111011222), we get a palindrome (3332112333).

The spelling of 2221101111 in words is "two billion, two hundred twenty-one million, one hundred one thousand, one hundred eleven".