121355141 has 2 divisors, whose sum is σ = 121355142. Its totient is φ = 121355140.

The previous prime is 121355093. The next prime is 121355161. The reversal of 121355141 is 141553121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 60124516 = 7825^2 + 7754^2 .

It is an emirp because it is prime and its reverse (141553121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121355141 - 2¹⁴ = 121338757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121355161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60677570 + 60677571.

It is an arithmetic number, because the mean of its divisors is an integer number (60677571).

Almost surely, 2^121355141 is an apocalyptic number.

It is an amenable number.

121355141 is a deficient number, since it is larger than the sum of its proper divisors (1).

121355141 is an equidigital number, since it uses as much as digits as its factorization.

121355141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 121355141 is about 11016.1309451186. The cubic root of 121355141 is about 495.0921720683.

The spelling of 121355141 in words is "one hundred twenty-one million, three hundred fifty-five thousand, one hundred forty-one".