1011040111 has 4 divisors (see below), whose sum is σ = 1020489192. Its totient is φ = 1001591032.

The previous prime is 1011040109. The next prime is 1011040127. The reversal of 1011040111 is 1110401101.

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 1011040111 - 2¹ = 1011040109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011040411) 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 3 ways as a sum of consecutive naturals, for example, 4724380 + ... + 4724593.

It is an arithmetic number, because the mean of its divisors is an integer number (255122298).

Almost surely, 2^1011040111 is an apocalyptic number.

1011040111 is a deficient number, since it is larger than the sum of its proper divisors (9449081).

1011040111 is an equidigital number, since it uses as much as digits as its factorization.

1011040111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449080.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1011040111 is about 31796.8569358671. The cubic root of 1011040111 is about 1003.6665767838. Note that the first 3 decimals are identical.

Adding to 1011040111 its reverse (1110401101), we get a palindrome (2121441212).

The spelling of 1011040111 in words is "one billion, eleven million, forty thousand, one hundred eleven".