9520210121 has 2 divisors, whose sum is σ = 9520210122. Its totient is φ = 9520210120.

The previous prime is 9520210057. The next prime is 9520210123. The reversal of 9520210121 is 1210120259.

9520210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9446868025 + 73342096 = 97195^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 9520210121 - 2⁶ = 9520210057 is a prime.

Together with 9520210123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9520210123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4760105060 + 4760105061.

It is an arithmetic number, because the mean of its divisors is an integer number (4760105061).

Almost surely, 2^9520210121 is an apocalyptic number.

It is an amenable number.

9520210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9520210121 is an equidigital number, since it uses as much as digits as its factorization.

9520210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 9520210121 is about 97571.5641004079. The cubic root of 9520210121 is about 2119.4125969157.

The spelling of 9520210121 in words is "nine billion, five hundred twenty million, two hundred ten thousand, one hundred twenty-one".