121280012597 has 2 divisors, whose sum is σ = 121280012598. Its totient is φ = 121280012596.

The previous prime is 121280012569. The next prime is 121280012599. The reversal of 121280012597 is 795210082121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105433986436 + 15846026161 = 324706^2 + 125881^2 .

It is a cyclic number.

It is not a de Polignac number, because 121280012597 - 2¹² = 121280008501 is a prime.

Together with 121280012599, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121280012597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121280012599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60640006298 + 60640006299.

It is an arithmetic number, because the mean of its divisors is an integer number (60640006299).

Almost surely, 2^121280012597 is an apocalyptic number.

It is an amenable number.

121280012597 is a deficient number, since it is larger than the sum of its proper divisors (1).

121280012597 is an equidigital number, since it uses as much as digits as its factorization.

121280012597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 121280012597 in words is "one hundred twenty-one billion, two hundred eighty million, twelve thousand, five hundred ninety-seven".