2221120111 has 4 divisors (see below), whose sum is σ = 2538422992. Its totient is φ = 1903817232.

The previous prime is 2221120093. The next prime is 2221120127. The reversal of 2221120111 is 1110211222.

2221120111 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.

It is a cyclic number.

It is not a de Polignac number, because 2221120111 - 2⁵ = 2221120079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221120091 and 2221120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221120171) 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, 158651430 + ... + 158651443.

It is an arithmetic number, because the mean of its divisors is an integer number (634605748).

Almost surely, 2^2221120111 is an apocalyptic number.

2221120111 is a deficient number, since it is larger than the sum of its proper divisors (317302881).

2221120111 is an equidigital number, since it uses as much as digits as its factorization.

2221120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317302880.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2221120111 is about 47128.7609745896. The cubic root of 2221120111 is about 1304.7401137378.

Adding to 2221120111 its reverse (1110211222), we get a palindrome (3331331333).

The spelling of 2221120111 in words is "two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred eleven".