44420111 has 2 divisors, whose sum is σ = 44420112. Its totient is φ = 44420110.

The previous prime is 44420071. The next prime is 44420113. The reversal of 44420111 is 11102444.

44420111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44420111 - 2²² = 40225807 is a prime.

It is a super-2 number, since 2×44420111² = 3946292522504642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 44420113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44420111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44420113) 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 as a sum of consecutive naturals, namely, 22210055 + 22210056.

It is an arithmetic number, because the mean of its divisors is an integer number (22210056).

Almost surely, 2^44420111 is an apocalyptic number.

44420111 is a deficient number, since it is larger than the sum of its proper divisors (1).

44420111 is an equidigital number, since it uses as much as digits as its factorization.

44420111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 44420111 is about 6664.8414084658. The cubic root of 44420111 is about 354.1548659013.

Adding to 44420111 its reverse (11102444), we get a palindrome (55522555).

The spelling of 44420111 in words is "forty-four million, four hundred twenty thousand, one hundred eleven".