11120221111 has 4 divisors (see below), whose sum is σ = 11128114800. Its totient is φ = 11112327424.

The previous prime is 11120221097. The next prime is 11120221117. The reversal of 11120221111 is 11112202111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112202111 = 3691 ⋅3010621.

It is a cyclic number.

It is not a de Polignac number, because 11120221111 - 2⁷ = 11120220983 is a prime.

It is a super-4 number, since 4×11120221111⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120221091 and 11120221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120221117) 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, 3944731 + ... + 3947548.

It is an arithmetic number, because the mean of its divisors is an integer number (2782028700).

Almost surely, 2^11120221111 is an apocalyptic number.

11120221111 is a deficient number, since it is larger than the sum of its proper divisors (7893689).

11120221111 is an equidigital number, since it uses as much as digits as its factorization.

11120221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7893688.

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

Adding to 11120221111 its reverse (11112202111), we get a palindrome (22232423222).

The spelling of 11120221111 in words is "eleven billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".