1011442111 has 2 divisors, whose sum is σ = 1011442112. Its totient is φ = 1011442110.

The previous prime is 1011442109. The next prime is 1011442127. The reversal of 1011442111 is 1112441101.

It is an a-pointer prime, because the next prime (1011442127) can be obtained adding 1011442111 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011442111 - 2¹ = 1011442109 is a prime.

Together with 1011442109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011442141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505721055 + 505721056.

It is an arithmetic number, because the mean of its divisors is an integer number (505721056).

Almost surely, 2^1011442111 is an apocalyptic number.

1011442111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011442111 is an equidigital number, since it uses as much as digits as its factorization.

1011442111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1011442111 is about 31803.1776871432. The cubic root of 1011442111 is about 1003.7995818928.

Adding to 1011442111 its reverse (1112441101), we get a palindrome (2123883212).

It can be divided in two parts, 10114 and 42111, that added together give a palindrome (52225).

The spelling of 1011442111 in words is "one billion, eleven million, four hundred forty-two thousand, one hundred eleven".