121141243 has 2 divisors, whose sum is σ = 121141244. Its totient is φ = 121141242.

The previous prime is 121141217. The next prime is 121141247. The reversal of 121141243 is 342141121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121141243 is a prime.

It is a super-3 number, since 3×121141243³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121141243.

It is not a weakly prime, because it can be changed into another prime (121141247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60570621 + 60570622.

It is an arithmetic number, because the mean of its divisors is an integer number (60570622).

Almost surely, 2^121141243 is an apocalyptic number.

121141243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121141243 is an equidigital number, since it uses as much as digits as its factorization.

121141243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 121141243 is about 11006.4182639040. The cubic root of 121141243 is about 494.8011213442.

Adding to 121141243 its reverse (342141121), we get a palindrome (463282364).

The spelling of 121141243 in words is "one hundred twenty-one million, one hundred forty-one thousand, two hundred forty-three".