12021222000121 has 2 divisors, whose sum is σ = 12021222000122. Its totient is φ = 12021222000120.

The previous prime is 12021222000119. The next prime is 12021222000143. The reversal of 12021222000121 is 12100022212021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10484229540096 + 1536992460025 = 3237936^2 + 1239755^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021222000121 - 2¹ = 12021222000119 is a prime.

Together with 12021222000119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12021222000095 and 12021222000104.

It is not a weakly prime, because it can be changed into another prime (12021222003121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010611000060 + 6010611000061.

It is an arithmetic number, because the mean of its divisors is an integer number (6010611000061).

Almost surely, 2^{12021222000121} is an apocalyptic number.

It is an amenable number.

12021222000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021222000121 is an equidigital number, since it uses as much as digits as its factorization.

12021222000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021222000121 its reverse (12100022212021), we get a palindrome (24121244212142).

The spelling of 12021222000121 in words is "twelve trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.