121813163 has 2 divisors, whose sum is σ = 121813164. Its totient is φ = 121813162.

The previous prime is 121813151. The next prime is 121813189. The reversal of 121813163 is 361318121.

It is an a-pointer prime, because the next prime (121813189) can be obtained adding 121813163 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121813163 - 2⁴ = 121813147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121813103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60906581 + 60906582.

It is an arithmetic number, because the mean of its divisors is an integer number (60906582).

Almost surely, 2^121813163 is an apocalyptic number.

121813163 is a deficient number, since it is larger than the sum of its proper divisors (1).

121813163 is an equidigital number, since it uses as much as digits as its factorization.

121813163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 121813163 is about 11036.9000629706. The cubic root of 121813163 is about 495.7142537162.

The spelling of 121813163 in words is "one hundred twenty-one million, eight hundred thirteen thousand, one hundred sixty-three".