1244442111 has 16 divisors (see below), whose sum is σ = 1820568960. Its totient is φ = 749844320.

The previous prime is 1244442091. The next prime is 1244442149. The reversal of 1244442111 is 1112444421.

It is a cyclic number.

It is not a de Polignac number, because 1244442111 - 2⁵ = 1244442079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244442161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103281 + ... + 114698.

It is an arithmetic number, because the mean of its divisors is an integer number (113785560).

Almost surely, 2^1244442111 is an apocalyptic number.

1244442111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1244442111 is a deficient number, since it is larger than the sum of its proper divisors (576126849).

1244442111 is a wasteful number, since it uses less digits than its factorization.

1244442111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218166.

The product of its digits is 1024, while the sum is 24.

The square root of 1244442111 is about 35276.6510740461. The cubic root of 1244442111 is about 1075.6184250553.

Adding to 1244442111 its reverse (1112444421), we get a palindrome (2356886532).

It can be divided in two parts, 12444421 and 11, that multiplied together give a palindrome (136888631).

The spelling of 1244442111 in words is "one billion, two hundred forty-four million, four hundred forty-two thousand, one hundred eleven".