11112211 has 4 divisors (see below), whose sum is σ = 12122424. Its totient is φ = 10102000.

The previous prime is 11112209. The next prime is 11112217. The reversal of 11112211 is 11221111.

11112211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11221111 = 11 ⋅1020101.

It is a cyclic number.

It is not a de Polignac number, because 11112211 - 2¹ = 11112209 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11112217) 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, 505090 + ... + 505111.

It is an arithmetic number, because the mean of its divisors is an integer number (3030606).

Almost surely, 2^11112211 is an apocalyptic number.

11112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11112211 is a deficient number, since it is larger than the sum of its proper divisors (1010213).

11112211 is a wasteful number, since it uses less digits than its factorization.

11112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010212.

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

The square root of 11112211 is about 3333.4983125839. The cubic root of 11112211 is about 223.1516794698.

Adding to 11112211 its reverse (11221111), we get a palindrome (22333322).

Subtracting 11112211 from its reverse (11221111), we obtain a square (108900 = 330²).

It can be divided in two parts, 11 and 112211, that multiplied together give a palindrome (1234321).

The spelling of 11112211 in words is "eleven million, one hundred twelve thousand, two hundred eleven".