120121220210213 has 2 divisors, whose sum is σ = 120121220210214. Its totient is φ = 120121220210212.

The previous prime is 120121220210191. The next prime is 120121220210239. The reversal of 120121220210213 is 312012022121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75362417409409 + 44758802800804 = 8681153^2 + 6690202^2 .

It is an emirp because it is prime and its reverse (312012022121021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120121220210213 - 2²⁶ = 120121153101349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121220210413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060610105106 + 60060610105107.

It is an arithmetic number, because the mean of its divisors is an integer number (60060610105107).

Almost surely, 2^{120121220210213} is an apocalyptic number.

It is an amenable number.

120121220210213 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121220210213 is an equidigital number, since it uses as much as digits as its factorization.

120121220210213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 120121220210213 its reverse (312012022121021), we get a palindrome (432133242331234).

The spelling of 120121220210213 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, two hundred thirteen".