12001120112221 has 4 divisors (see below), whose sum is σ = 12008958859744. Its totient is φ = 11993281364700.

The previous prime is 12001120112213. The next prime is 12001120112279. The reversal of 12001120112221 is 12221102110021.

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 12001120112221 - 2³ = 12001120112213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001120112195 and 12001120112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001120112321) 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, 3919371465 + ... + 3919374526.

It is an arithmetic number, because the mean of its divisors is an integer number (3002239714936).

Almost surely, 2^{12001120112221} is an apocalyptic number.

It is an amenable number.

12001120112221 is a deficient number, since it is larger than the sum of its proper divisors (7838747523).

12001120112221 is an equidigital number, since it uses as much as digits as its factorization.

12001120112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7838747522.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12001120112221 its reverse (12221102110021), we get a palindrome (24222222222242).

The spelling of 12001120112221 in words is "twelve trillion, one billion, one hundred twenty million, one hundred twelve thousand, two hundred twenty-one".