121116402643 has 2 divisors, whose sum is σ = 121116402644. Its totient is φ = 121116402642.

The previous prime is 121116402587. The next prime is 121116402653. The reversal of 121116402643 is 346204611121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121116402643 is a prime.

It is not a weakly prime, because it can be changed into another prime (121116402653) 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, 60558201321 + 60558201322.

It is an arithmetic number, because the mean of its divisors is an integer number (60558201322).

Almost surely, 2^121116402643 is an apocalyptic number.

121116402643 is a deficient number, since it is larger than the sum of its proper divisors (1).

121116402643 is an equidigital number, since it uses as much as digits as its factorization.

121116402643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 121116402643 in words is "one hundred twenty-one billion, one hundred sixteen million, four hundred two thousand, six hundred forty-three".