121136190997 has 2 divisors, whose sum is σ = 121136190998. Its totient is φ = 121136190996.

The previous prime is 121136190991. The next prime is 121136191009. The reversal of 121136190997 is 799091631121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119599080561 + 1537110436 = 345831^2 + 39206^2 .

It is a cyclic number.

It is not a de Polignac number, because 121136190997 - 2¹⁵ = 121136158229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121136190997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121136190991) 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, 60568095498 + 60568095499.

It is an arithmetic number, because the mean of its divisors is an integer number (60568095499).

Almost surely, 2^121136190997 is an apocalyptic number.

It is an amenable number.

121136190997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121136190997 is an equidigital number, since it uses as much as digits as its factorization.

121136190997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 49.

The spelling of 121136190997 in words is "one hundred twenty-one billion, one hundred thirty-six million, one hundred ninety thousand, nine hundred ninety-seven".