11220112011 has 8 divisors (see below), whose sum is σ = 15610590720. Its totient is φ = 7154853992.

The previous prime is 11220111997. The next prime is 11220112021. The reversal of 11220112011 is 11021102211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220112011 - 2⁹ = 11220111499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11220112021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81305091 + ... + 81305228.

It is an arithmetic number, because the mean of its divisors is an integer number (1951323840).

Almost surely, 2^11220112011 is an apocalyptic number.

11220112011 is a deficient number, since it is larger than the sum of its proper divisors (4390478709).

11220112011 is a wasteful number, since it uses less digits than its factorization.

11220112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162610345.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11220112011 its reverse (11021102211), we get a palindrome (22241214222).

The spelling of 11220112011 in words is "eleven billion, two hundred twenty million, one hundred twelve thousand, eleven".