121297935149 has 2 divisors, whose sum is σ = 121297935150. Its totient is φ = 121297935148.

The previous prime is 121297935139. The next prime is 121297935163. The reversal of 121297935149 is 941539792121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117345298249 + 3952636900 = 342557^2 + 62870^2 .

It is an emirp because it is prime and its reverse (941539792121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121297935149 - 2⁴ = 121297935133 is a prime.

It is a super-2 number, since 2×121297935149² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121297935149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121297935139) 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, 60648967574 + 60648967575.

It is an arithmetic number, because the mean of its divisors is an integer number (60648967575).

Almost surely, 2^121297935149 is an apocalyptic number.

It is an amenable number.

121297935149 is a deficient number, since it is larger than the sum of its proper divisors (1).

121297935149 is an equidigital number, since it uses as much as digits as its factorization.

121297935149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 53.

The spelling of 121297935149 in words is "one hundred twenty-one billion, two hundred ninety-seven million, nine hundred thirty-five thousand, one hundred forty-nine".