121121121110947 has 2 divisors, whose sum is σ = 121121121110948. Its totient is φ = 121121121110946.

The previous prime is 121121121110929. The next prime is 121121121111047. The reversal of 121121121110947 is 749011121121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121121121110947 - 2¹⁵ = 121121121078179 is a prime.

It is not a weakly prime, because it can be changed into another prime (121121121113947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560560555473 + 60560560555474.

It is an arithmetic number, because the mean of its divisors is an integer number (60560560555474).

Almost surely, 2^{121121121110947} is an apocalyptic number.

121121121110947 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121121110947 is an equidigital number, since it uses as much as digits as its factorization.

121121121110947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 34.

The spelling of 121121121110947 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, nine hundred forty-seven".