12001121101 has 4 divisors (see below), whose sum is σ = 12012122304. Its totient is φ = 11990119900.

The previous prime is 12001121089. The next prime is 12001121149. The reversal of 12001121101 is 10112110021.

12001121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12001121101 - 2⁷ = 12001120973 is a prime.

It is a Duffinian number.

12001121101 is a modest number, since divided by 121101 gives 12001 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001121701) 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 3 ways as a sum of consecutive naturals, for example, 5498965 + ... + 5501146.

It is an arithmetic number, because the mean of its divisors is an integer number (3003030576).

Almost surely, 2^12001121101 is an apocalyptic number.

It is an amenable number.

12001121101 is a deficient number, since it is larger than the sum of its proper divisors (11001203).

12001121101 is a wasteful number, since it uses less digits than its factorization.

12001121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001202.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12001121101 its reverse (10112110021), we get a palindrome (22113231122).

The spelling of 12001121101 in words is "twelve billion, one million, one hundred twenty-one thousand, one hundred one".