121025143 has 2 divisors, whose sum is σ = 121025144. Its totient is φ = 121025142.

The previous prime is 121025111. The next prime is 121025161. The reversal of 121025143 is 341520121.

It is a strong prime.

It is an emirp because it is prime and its reverse (341520121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121025143 - 2⁵ = 121025111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121025143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121025543) 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, 60512571 + 60512572.

It is an arithmetic number, because the mean of its divisors is an integer number (60512572).

Almost surely, 2^121025143 is an apocalyptic number.

121025143 is a deficient number, since it is larger than the sum of its proper divisors (1).

121025143 is an equidigital number, since it uses as much as digits as its factorization.

121025143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121025143 is about 11001.1428042727. The cubic root of 121025143 is about 494.6430007612.

Adding to 121025143 its reverse (341520121), we get a palindrome (462545264).

The spelling of 121025143 in words is "one hundred twenty-one million, twenty-five thousand, one hundred forty-three".