121326163 has 16 divisors (see below), whose sum is σ = 140958720. Its totient is φ = 102280896.

The previous prime is 121326151. The next prime is 121326181. The reversal of 121326163 is 361623121.

It is a cyclic number.

It is not a de Polignac number, because 121326163 - 2⁵ = 121326131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121326143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212943 + ... + 213511.

It is an arithmetic number, because the mean of its divisors is an integer number (8809920).

Almost surely, 2^121326163 is an apocalyptic number.

121326163 is a deficient number, since it is larger than the sum of its proper divisors (19632557).

121326163 is an equidigital number, since it uses as much as digits as its factorization.

121326163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 1296, while the sum is 25.

The square root of 121326163 is about 11014.8156135271. The cubic root of 121326163 is about 495.0527617806.

Adding to 121326163 its reverse (361623121), we get a palindrome (482949284).

The spelling of 121326163 in words is "one hundred twenty-one million, three hundred twenty-six thousand, one hundred sixty-three".