121353412997 has 2 divisors, whose sum is σ = 121353412998. Its totient is φ = 121353412996.

The previous prime is 121353412987. The next prime is 121353413047. The reversal of 121353412997 is 799214353121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73852954081 + 47500458916 = 271759^2 + 217946^2 .

It is an emirp because it is prime and its reverse (799214353121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121353412997 - 2¹⁰ = 121353411973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121353412937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60676706498 + 60676706499.

It is an arithmetic number, because the mean of its divisors is an integer number (60676706499).

Almost surely, 2^121353412997 is an apocalyptic number.

It is an amenable number.

121353412997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121353412997 is an equidigital number, since it uses as much as digits as its factorization.

121353412997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The spelling of 121353412997 in words is "one hundred twenty-one billion, three hundred fifty-three million, four hundred twelve thousand, nine hundred ninety-seven".