121033210000121 has 2 divisors, whose sum is σ = 121033210000122. Its totient is φ = 121033210000120.

The previous prime is 121033210000061. The next prime is 121033210000123. The reversal of 121033210000121 is 121000012330121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84071734636096 + 36961475364025 = 9169064^2 + 6079595^2 .

It is a cyclic number.

It is not a de Polignac number, because 121033210000121 - 2¹⁸ = 121033209737977 is a prime.

It is a Sophie Germain prime.

Together with 121033210000123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121033210000121.

It is not a weakly prime, because it can be changed into another prime (121033210000123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516605000060 + 60516605000061.

It is an arithmetic number, because the mean of its divisors is an integer number (60516605000061).

Almost surely, 2^{121033210000121} is an apocalyptic number.

It is an amenable number.

121033210000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121033210000121 is an equidigital number, since it uses as much as digits as its factorization.

121033210000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121033210000121 its reverse (121000012330121), we get a palindrome (242033222330242).

The spelling of 121033210000121 in words is "one hundred twenty-one trillion, thirty-three billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.