12001121110001 has 4 divisors (see below), whose sum is σ = 12001174527600. Its totient is φ = 12001067692404.

The previous prime is 12001121109973. The next prime is 12001121110091. The reversal of 12001121110001 is 10001112110021.

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 12001121110001 - 2¹⁸ = 12001120847857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001121110091) 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, 26370371 + ... + 26821608.

It is an arithmetic number, because the mean of its divisors is an integer number (3000293631900).

Almost surely, 2^{12001121110001} is an apocalyptic number.

It is an amenable number.

12001121110001 is a deficient number, since it is larger than the sum of its proper divisors (53417599).

12001121110001 is an equidigital number, since it uses as much as digits as its factorization.

12001121110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53417598.

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

Adding to 12001121110001 its reverse (10001112110021), we get a palindrome (22002233220022).

The spelling of 12001121110001 in words is "twelve trillion, one billion, one hundred twenty-one million, one hundred ten thousand, one".