11011001121 has 12 divisors (see below), whose sum is σ = 15906811648. Its totient is φ = 7339729464.

The previous prime is 11011001077. The next prime is 11011001143. The reversal of 11011001121 is 12110011011.

It is not a de Polignac number, because 11011001121 - 2²⁶ = 10943892257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11011001821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336 + ... + 148398.

Almost surely, 2^11011001121 is an apocalyptic number.

It is an amenable number.

11011001121 is a deficient number, since it is larger than the sum of its proper divisors (4895810527).

11011001121 is a wasteful number, since it uses less digits than its factorization.

11011001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156332 (or 156329 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11011001121 its reverse (12110011011), we get a palindrome (23121012132).

The spelling of 11011001121 in words is "eleven billion, eleven million, one thousand, one hundred twenty-one".