120001121021 has 2 divisors, whose sum is σ = 120001121022. Its totient is φ = 120001121020.

The previous prime is 120001120937. The next prime is 120001121077. The reversal of 120001121021 is 120121100021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76182072121 + 43819048900 = 276011^2 + 209330^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001121021 - 2¹⁴ = 120001104637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120001120993 and 120001121011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120001121221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000560510 + 60000560511.

It is an arithmetic number, because the mean of its divisors is an integer number (60000560511).

Almost surely, 2^120001121021 is an apocalyptic number.

It is an amenable number.

120001121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001121021 is an equidigital number, since it uses as much as digits as its factorization.

120001121021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 120001121021 its reverse (120121100021), we get a palindrome (240122221042).

The spelling of 120001121021 in words is "one hundred twenty billion, one million, one hundred twenty-one thousand, twenty-one".