11120212209 has 4 divisors (see below), whose sum is σ = 14826949616. Its totient is φ = 7413474804.

The previous prime is 11120212163. The next prime is 11120212237. The reversal of 11120212209 is 90221202111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90221202111 = 3 ⋅30073734037.

It is not a de Polignac number, because 11120212209 - 2²³ = 11111823601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11120212409) 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, 1853368699 + ... + 1853368704.

It is an arithmetic number, because the mean of its divisors is an integer number (3706737404).

Almost surely, 2^11120212209 is an apocalyptic number.

It is an amenable number.

11120212209 is a deficient number, since it is larger than the sum of its proper divisors (3706737407).

11120212209 is an equidigital number, since it uses as much as digits as its factorization.

11120212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706737406.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 11120212209 in words is "eleven billion, one hundred twenty million, two hundred twelve thousand, two hundred nine".