121221111132943 has 2 divisors, whose sum is σ = 121221111132944. Its totient is φ = 121221111132942.

The previous prime is 121221111132931. The next prime is 121221111133061. The reversal of 121221111132943 is 349231111122121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121221111132943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121221111132899 and 121221111132908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121221111532943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610555566471 + 60610555566472.

It is an arithmetic number, because the mean of its divisors is an integer number (60610555566472).

Almost surely, 2^{121221111132943} is an apocalyptic number.

121221111132943 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221111132943 is an equidigital number, since it uses as much as digits as its factorization.

121221111132943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The spelling of 121221111132943 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred eleven million, one hundred thirty-two thousand, nine hundred forty-three".