12012000221121 has 8 divisors (see below), whose sum is σ = 16021025723424. Its totient is φ = 8005487433120.

The previous prime is 12012000221099. The next prime is 12012000221153. The reversal of 12012000221121 is 12112200021021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012000221121 - 2⁶ = 12012000221057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012000221121.

It is not an unprimeable number, because it can be changed into a prime (12012000221521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628167420 + ... + 628186541.

It is an arithmetic number, because the mean of its divisors is an integer number (2002628215428).

Almost surely, 2^{12012000221121} is an apocalyptic number.

It is an amenable number.

12012000221121 is a deficient number, since it is larger than the sum of its proper divisors (4009025502303).

12012000221121 is a wasteful number, since it uses less digits than its factorization.

12012000221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256357151.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012000221121 its reverse (12112200021021), we get a palindrome (24124200242142).

The spelling of 12012000221121 in words is "twelve trillion, twelve billion, two hundred twenty-one thousand, one hundred twenty-one".