120210100210121 has 2 divisors, whose sum is σ = 120210100210122. Its totient is φ = 120210100210120.

The previous prime is 120210100210091. The next prime is 120210100210127. The reversal of 120210100210121 is 121012001012021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119792784210121 + 417316000000 = 10944989^2 + 646000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120210100210121 is a prime.

It is a super-3 number, since 3×120210100210121³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120210100210096 and 120210100210105.

It is not a weakly prime, because it can be changed into another prime (120210100210127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105050105060 + 60105050105061.

It is an arithmetic number, because the mean of its divisors is an integer number (60105050105061).

Almost surely, 2^{120210100210121} is an apocalyptic number.

It is an amenable number.

120210100210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120210100210121 is an equidigital number, since it uses as much as digits as its factorization.

120210100210121 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 14.

Adding to 120210100210121 its reverse (121012001012021), we get a palindrome (241222101222142).

The spelling of 120210100210121 in words is "one hundred twenty trillion, two hundred ten billion, one hundred million, two hundred ten thousand, one hundred twenty-one".