121321312320167 has 2 divisors, whose sum is σ = 121321312320168. Its totient is φ = 121321312320166.

The previous prime is 121321312320137. The next prime is 121321312320211. The reversal of 121321312320167 is 761023213123121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121321312320167 - 2⁴⁴ = 103729126275751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121321312320107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660656160083 + 60660656160084.

It is an arithmetic number, because the mean of its divisors is an integer number (60660656160084).

Almost surely, 2^{121321312320167} is an apocalyptic number.

121321312320167 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321312320167 is an equidigital number, since it uses as much as digits as its factorization.

121321312320167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

Adding to 121321312320167 its reverse (761023213123121), we get a palindrome (882344525443288).

The spelling of 121321312320167 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, three hundred twenty thousand, one hundred sixty-seven".