121335105197 has 2 divisors, whose sum is σ = 121335105198. Its totient is φ = 121335105196.

The previous prime is 121335105163. The next prime is 121335105223. The reversal of 121335105197 is 791501533121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81492549961 + 39842555236 = 285469^2 + 199606^2 .

It is a cyclic number.

It is not a de Polignac number, because 121335105197 - 2¹² = 121335101101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121335105197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121335101197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60667552598 + 60667552599.

It is an arithmetic number, because the mean of its divisors is an integer number (60667552599).

Almost surely, 2^121335105197 is an apocalyptic number.

It is an amenable number.

121335105197 is a deficient number, since it is larger than the sum of its proper divisors (1).

121335105197 is an equidigital number, since it uses as much as digits as its factorization.

121335105197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 38.

The spelling of 121335105197 in words is "one hundred twenty-one billion, three hundred thirty-five million, one hundred five thousand, one hundred ninety-seven".