11011101121009 has 4 divisors (see below), whose sum is σ = 12012110313840. Its totient is φ = 10010091928180.

The previous prime is 11011101120989. The next prime is 11011101121021. The reversal of 11011101121009 is 90012110111011.

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 11011101121009 - 2¹⁵ = 11011101088241 is a prime.

It is a super-2 number, since 2×11011101121009² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011101128009) 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, 500504596399 + ... + 500504596420.

It is an arithmetic number, because the mean of its divisors is an integer number (3003027578460).

Almost surely, 2^{11011101121009} is an apocalyptic number.

It is an amenable number.

11011101121009 is a deficient number, since it is larger than the sum of its proper divisors (1001009192831).

11011101121009 is a wasteful number, since it uses less digits than its factorization.

11011101121009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001009192830.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 11011101121009 in words is "eleven trillion, eleven billion, one hundred one million, one hundred twenty-one thousand, nine".