120121212100061 has 2 divisors, whose sum is σ = 120121212100062. Its totient is φ = 120121212100060.

The previous prime is 120121212100027. The next prime is 120121212100163. The reversal of 120121212100061 is 160001212121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100337664563161 + 19783547536900 = 10016869^2 + 4447870^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121212100061 - 2¹⁰ = 120121212099037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121212150061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060606050030 + 60060606050031.

It is an arithmetic number, because the mean of its divisors is an integer number (60060606050031).

Almost surely, 2^{120121212100061} is an apocalyptic number.

It is an amenable number.

120121212100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121212100061 is an equidigital number, since it uses as much as digits as its factorization.

120121212100061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 120121212100061 its reverse (160001212121021), we get a palindrome (280122424221082).

The spelling of 120121212100061 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thousand, sixty-one".