121120020000121 has 2 divisors, whose sum is σ = 121120020000122. Its totient is φ = 121120020000120.

The previous prime is 121120020000107. The next prime is 121120020000163. The reversal of 121120020000121 is 121000020021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118952614771600 + 2167405228521 = 10906540^2 + 1472211^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120020000121 - 2⁹ = 121120019999609 is a prime.

It is a super-2 number, since 2×121120020000121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121120020007121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560010000060 + 60560010000061.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010000061).

Almost surely, 2^{121120020000121} is an apocalyptic number.

It is an amenable number.

121120020000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120020000121 is an equidigital number, since it uses as much as digits as its factorization.

121120020000121 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 121120020000121 its reverse (121000020021121), we get a palindrome (242120040021242).

The spelling of 121120020000121 in words is "one hundred twenty-one trillion, one hundred twenty billion, twenty million, one hundred twenty-one", and thus it is an aban number.