210121201122167 has 2 divisors, whose sum is σ = 210121201122168. Its totient is φ = 210121201122166.

The previous prime is 210121201122089. The next prime is 210121201122169. The reversal of 210121201122167 is 761221102121012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210121201122167 - 2¹² = 210121201118071 is a prime.

It is a super-2 number, since 2×210121201122167² (a number of 29 digits) contains 22 as substring.

Together with 210121201122169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210121201122169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060600561083 + 105060600561084.

It is an arithmetic number, because the mean of its divisors is an integer number (105060600561084).

Almost surely, 2^{210121201122167} is an apocalyptic number.

210121201122167 is a deficient number, since it is larger than the sum of its proper divisors (1).

210121201122167 is an equidigital number, since it uses as much as digits as its factorization.

210121201122167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 210121201122167 its reverse (761221102121012), we get a palindrome (971342303243179).

The spelling of 210121201122167 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, one hundred sixty-seven".