1111081 has 2 divisors, whose sum is σ = 1111082. Its totient is φ = 1111080.

The previous prime is 1111067. The next prime is 1111087. The reversal of 1111081 is 1801111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 502681 = 780^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111081 - 2⁵ = 1111049 is a prime.

It is a super-3 number, since 3×1111081³ = 4114891778614033323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1111087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555540 + 555541.

It is an arithmetic number, because the mean of its divisors is an integer number (555541).

2^1111081 is an apocalyptic number.

It is an amenable number.

1111081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111081 is an equidigital number, since it uses as much as digits as its factorization.

1111081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

The square root of 1111081 is about 1054.0782703386. The cubic root of 1111081 is about 103.5734812344.

Adding to 1111081 its reverse (1801111), we get a palindrome (2912192).

The spelling of 1111081 in words is "one million, one hundred eleven thousand, eighty-one".