1244135111 has 2 divisors, whose sum is σ = 1244135112. Its totient is φ = 1244135110.

The previous prime is 1244135107. The next prime is 1244135129. The reversal of 1244135111 is 1115314421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1244135111 - 2² = 1244135107 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244135161) 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 as a sum of consecutive naturals, namely, 622067555 + 622067556.

It is an arithmetic number, because the mean of its divisors is an integer number (622067556).

Almost surely, 2^1244135111 is an apocalyptic number.

1244135111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244135111 is an equidigital number, since it uses as much as digits as its factorization.

1244135111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 1244135111 is about 35272.2994855737. The cubic root of 1244135111 is about 1075.5299672070.

Adding to 1244135111 its reverse (1115314421), we get a palindrome (2359449532).

The spelling of 1244135111 in words is "one billion, two hundred forty-four million, one hundred thirty-five thousand, one hundred eleven".