11112001121 has 8 divisors (see below), whose sum is σ = 12145379904. Its totient is φ = 10104138000.

The previous prime is 11112001099. The next prime is 11112001123. The reversal of 11112001121 is 12110021111.

11112001121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112001121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11112001123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6378005 + ... + 6379746.

It is an arithmetic number, because the mean of its divisors is an integer number (1518172488).

Almost surely, 2^11112001121 is an apocalyptic number.

It is an amenable number.

11112001121 is a deficient number, since it is larger than the sum of its proper divisors (1033378783).

11112001121 is a wasteful number, since it uses less digits than its factorization.

11112001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12757831.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112001121 its reverse (12110021111), we get a palindrome (23222022232).

The spelling of 11112001121 in words is "eleven billion, one hundred twelve million, one thousand, one hundred twenty-one".