2221144111 has 4 divisors (see below), whose sum is σ = 2221805992. Its totient is φ = 2220482232.

The previous prime is 2221144103. The next prime is 2221144153. The reversal of 2221144111 is 1114411222.

It is a happy number.

2221144111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1114411222 = 2 ⋅557205611.

It is a cyclic number.

It is not a de Polignac number, because 2221144111 - 2³ = 2221144103 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221142111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325881 + ... + 332626.

It is an arithmetic number, because the mean of its divisors is an integer number (555451498).

Almost surely, 2^2221144111 is an apocalyptic number.

2221144111 is a deficient number, since it is larger than the sum of its proper divisors (661881).

2221144111 is an equidigital number, since it uses as much as digits as its factorization.

2221144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661880.

The product of its digits is 128, while the sum is 19.

The square root of 2221144111 is about 47129.0155954906. The cubic root of 2221144111 is about 1304.7448131160.

Adding to 2221144111 its reverse (1114411222), we get a palindrome (3335555333).

The spelling of 2221144111 in words is "two billion, two hundred twenty-one million, one hundred forty-four thousand, one hundred eleven".