120200121121 has 2 divisors, whose sum is σ = 120200121122. Its totient is φ = 120200121120.

The previous prime is 120200121113. The next prime is 120200121133. The reversal of 120200121121 is 121121002021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102233667600 + 17966453521 = 319740^2 + 134039^2 .

It is a cyclic number.

It is not a de Polignac number, because 120200121121 - 2³ = 120200121113 is a prime.

It is not a weakly prime, because it can be changed into another prime (120200121191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60100060560 + 60100060561.

It is an arithmetic number, because the mean of its divisors is an integer number (60100060561).

Almost surely, 2^120200121121 is an apocalyptic number.

It is an amenable number.

120200121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120200121121 is an equidigital number, since it uses as much as digits as its factorization.

120200121121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120200121121 its reverse (121121002021), we get a palindrome (241321123142).

The spelling of 120200121121 in words is "one hundred twenty billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-one".