120001120121 has 2 divisors, whose sum is σ = 120001120122. Its totient is φ = 120001120120.

The previous prime is 120001120117. The next prime is 120001120139. The reversal of 120001120121 is 121021100021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74495697721 + 45505422400 = 272939^2 + 213320^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001120121 - 2² = 120001120117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120001120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000560060 + 60000560061.

It is an arithmetic number, because the mean of its divisors is an integer number (60000560061).

Almost surely, 2^120001120121 is an apocalyptic number.

It is an amenable number.

120001120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001120121 is an equidigital number, since it uses as much as digits as its factorization.

120001120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120001120121 its reverse (121021100021), we get a palindrome (241022220142).

The spelling of 120001120121 in words is "one hundred twenty billion, one million, one hundred twenty thousand, one hundred twenty-one".