11261111 has 4 divisors (see below), whose sum is σ = 11318472. Its totient is φ = 11203752.

The previous prime is 11261071. The next prime is 11261113. The reversal of 11261111 is 11116211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11116211 = 409 ⋅27179.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11261111 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 (11261113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28385 + ... + 28778.

It is an arithmetic number, because the mean of its divisors is an integer number (2829618).

Almost surely, 2^11261111 is an apocalyptic number.

11261111 is a deficient number, since it is larger than the sum of its proper divisors (57361).

11261111 is an equidigital number, since it uses as much as digits as its factorization.

11261111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57360.

The product of its digits is 12, while the sum is 14.

The square root of 11261111 is about 3355.7578875717. The cubic root of 11261111 is about 224.1439802976.

Adding to 11261111 its reverse (11116211), we get a palindrome (22377322).

The spelling of 11261111 in words is "eleven million, two hundred sixty-one thousand, one hundred eleven".