11111202211 has 4 divisors (see below), whose sum is σ = 11111427712. Its totient is φ = 11110976712.

The previous prime is 11111202197. The next prime is 11111202217. The reversal of 11111202211 is 11220211111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11111202211 - 2²⁷ = 10976984483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111202191 and 11111202200.

It is not an unprimeable number, because it can be changed into a prime (11111202217) 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, 3651 + ... + 149116.

It is an arithmetic number, because the mean of its divisors is an integer number (2777856928).

Almost surely, 2^11111202211 is an apocalyptic number.

11111202211 is a deficient number, since it is larger than the sum of its proper divisors (225501).

11111202211 is an equidigital number, since it uses as much as digits as its factorization.

11111202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225500.

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

Adding to 11111202211 its reverse (11220211111), we get a palindrome (22331413322).

The spelling of 11111202211 in words is "eleven billion, one hundred eleven million, two hundred two thousand, two hundred eleven".