11121112201 has 4 divisors (see below), whose sum is σ = 11143222272. Its totient is φ = 11099002132.

The previous prime is 11121112157. The next prime is 11121112253. The reversal of 11121112201 is 10221112111.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11121112201 - 2¹⁹ = 11120587913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121112291) 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, 11054281 + ... + 11055286.

It is an arithmetic number, because the mean of its divisors is an integer number (2785805568).

Almost surely, 2^11121112201 is an apocalyptic number.

It is an amenable number.

11121112201 is a deficient number, since it is larger than the sum of its proper divisors (22110071).

11121112201 is an equidigital number, since it uses as much as digits as its factorization.

11121112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22110070.

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

Adding to 11121112201 its reverse (10221112111), we get a palindrome (21342224312).

The spelling of 11121112201 in words is "eleven billion, one hundred twenty-one million, one hundred twelve thousand, two hundred one".