121151243 has 2 divisors, whose sum is σ = 121151244. Its totient is φ = 121151242.

The previous prime is 121151237. The next prime is 121151267. The reversal of 121151243 is 342151121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121151243 - 2⁴ = 121151227 is a prime.

It is not a weakly prime, because it can be changed into another prime (121151203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60575621 + 60575622.

It is an arithmetic number, because the mean of its divisors is an integer number (60575622).

Almost surely, 2^121151243 is an apocalyptic number.

121151243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121151243 is an equidigital number, since it uses as much as digits as its factorization.

121151243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 20.

The square root of 121151243 is about 11006.8725349211. The cubic root of 121151243 is about 494.8147359617.

The spelling of 121151243 in words is "one hundred twenty-one million, one hundred fifty-one thousand, two hundred forty-three".