121380163 has 2 divisors, whose sum is σ = 121380164. Its totient is φ = 121380162.

The previous prime is 121380143. The next prime is 121380191. The reversal of 121380163 is 361083121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121380163 is a prime.

It is not a weakly prime, because it can be changed into another prime (121380143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60690081 + 60690082.

It is an arithmetic number, because the mean of its divisors is an integer number (60690082).

Almost surely, 2^121380163 is an apocalyptic number.

121380163 is a deficient number, since it is larger than the sum of its proper divisors (1).

121380163 is an equidigital number, since it uses as much as digits as its factorization.

121380163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 121380163 is about 11017.2665847750. The cubic root of 121380163 is about 495.1261971204.

The spelling of 121380163 in words is "one hundred twenty-one million, three hundred eighty thousand, one hundred sixty-three".