120121020121 has 2 divisors, whose sum is σ = 120121020122. Its totient is φ = 120121020120.

The previous prime is 120121020113. The next prime is 120121020133. The reversal of 120121020121 is 121020121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115896670096 + 4224350025 = 340436^2 + 64995^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121020121 - 2³ = 120121020113 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121020521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060510060 + 60060510061.

It is an arithmetic number, because the mean of its divisors is an integer number (60060510061).

Almost surely, 2^120121020121 is an apocalyptic number.

It is an amenable number.

120121020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121020121 is an equidigital number, since it uses as much as digits as its factorization.

120121020121 is an evil number, because the sum of its binary digits is even.

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

Adding to 120121020121 its reverse (121020121021), we get a palindrome (241141141142).

The spelling of 120121020121 in words is "one hundred twenty billion, one hundred twenty-one million, twenty thousand, one hundred twenty-one".