120001221210121 has 2 divisors, whose sum is σ = 120001221210122. Its totient is φ = 120001221210120.

The previous prime is 120001221210047. The next prime is 120001221210163. The reversal of 120001221210121 is 121012122100021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92368168618896 + 27633052591225 = 9610836^2 + 5256715^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001221210121 - 2⁹ = 120001221209609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120001221210095 and 120001221210104.

It is not a weakly prime, because it can be changed into another prime (120001221210181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000610605060 + 60000610605061.

It is an arithmetic number, because the mean of its divisors is an integer number (60000610605061).

Almost surely, 2^{120001221210121} is an apocalyptic number.

It is an amenable number.

120001221210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001221210121 is an equidigital number, since it uses as much as digits as its factorization.

120001221210121 is an evil number, because the sum of its binary digits is even.

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

Adding to 120001221210121 its reverse (121012122100021), we get a palindrome (241013343310142).

The spelling of 120001221210121 in words is "one hundred twenty trillion, one billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".