121051243 has 2 divisors, whose sum is σ = 121051244. Its totient is φ = 121051242.

The previous prime is 121051241. The next prime is 121051253. The reversal of 121051243 is 342150121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121051243 - 2¹ = 121051241 is a prime.

Together with 121051241, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121051243.

It is not a weakly prime, because it can be changed into another prime (121051241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60525621 + 60525622.

It is an arithmetic number, because the mean of its divisors is an integer number (60525622).

Almost surely, 2^121051243 is an apocalyptic number.

121051243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121051243 is an equidigital number, since it uses as much as digits as its factorization.

121051243 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 121051243 is about 11002.3289807204. The cubic root of 121051243 is about 494.6785560573.

The spelling of 121051243 in words is "one hundred twenty-one million, fifty-one thousand, two hundred forty-three".