11111071 has 8 divisors (see below), whose sum is σ = 11428560. Its totient is φ = 10796352.

The previous prime is 11111069. The next prime is 11111083. The reversal of 11111071 is 17011111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111071 - 2¹ = 11111069 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 (11111171) 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 in 7 ways as a sum of consecutive naturals, for example, 9465 + ... + 10573.

It is an arithmetic number, because the mean of its divisors is an integer number (1428570).

Almost surely, 2^11111071 is an apocalyptic number.

11111071 is a deficient number, since it is larger than the sum of its proper divisors (317489).

11111071 is a wasteful number, since it uses less digits than its factorization.

11111071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385.

The product of its (nonzero) digits is 7, while the sum is 13.

The square root of 11111071 is about 3333.3273166612. The cubic root of 11111071 is about 223.1440481767.

Adding to 11111071 its reverse (17011111), we get a palindrome (28122182).

The spelling of 11111071 in words is "eleven million, one hundred eleven thousand, seventy-one".