12000121000221 has 32 divisors (see below), whose sum is σ = 16344168422400. Its totient is φ = 7830218588544.

The previous prime is 12000121000103. The next prime is 12000121000249. The reversal of 12000121000221 is 12200012100021.

It is not a de Polignac number, because 12000121000221 - 2⁷ = 12000121000093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000121000197 and 12000121000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000121000321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11025690 + ... + 12065076.

It is an arithmetic number, because the mean of its divisors is an integer number (510755263200).

Almost surely, 2^{12000121000221} is an apocalyptic number.

It is an amenable number.

12000121000221 is a deficient number, since it is larger than the sum of its proper divisors (4344047422179).

12000121000221 is a wasteful number, since it uses less digits than its factorization.

12000121000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039905.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000121000221 its reverse (12200012100021), we get a palindrome (24200133100242).

The spelling of 12000121000221 in words is "twelve trillion, one hundred twenty-one million, two hundred twenty-one", and thus it is an aban number.