121770965593 has 2 divisors, whose sum is σ = 121770965594. Its totient is φ = 121770965592.

The previous prime is 121770965579. The next prime is 121770965621. The reversal of 121770965593 is 395569077121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76335058944 + 45435906649 = 276288^2 + 213157^2 .

It is a cyclic number.

It is not a de Polignac number, because 121770965593 - 2²⁵ = 121737411161 is a prime.

It is a super-2 number, since 2×121770965593² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121770965513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60885482796 + 60885482797.

It is an arithmetic number, because the mean of its divisors is an integer number (60885482797).

Almost surely, 2^121770965593 is an apocalyptic number.

It is an amenable number.

121770965593 is a deficient number, since it is larger than the sum of its proper divisors (1).

121770965593 is an equidigital number, since it uses as much as digits as its factorization.

121770965593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 55.

The spelling of 121770965593 in words is "one hundred twenty-one billion, seven hundred seventy million, nine hundred sixty-five thousand, five hundred ninety-three".