121201012943 has 2 divisors, whose sum is σ = 121201012944. Its totient is φ = 121201012942.

The previous prime is 121201012921. The next prime is 121201013039. The reversal of 121201012943 is 349210102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201012943 - 2⁸ = 121201012687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201012903) 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, 60600506471 + 60600506472.

It is an arithmetic number, because the mean of its divisors is an integer number (60600506472).

Almost surely, 2^121201012943 is an apocalyptic number.

121201012943 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201012943 is an equidigital number, since it uses as much as digits as its factorization.

121201012943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 121201012943 in words is "one hundred twenty-one billion, two hundred one million, twelve thousand, nine hundred forty-three".