121085782373 has 2 divisors, whose sum is σ = 121085782374. Its totient is φ = 121085782372.

The previous prime is 121085782369. The next prime is 121085782397. The reversal of 121085782373 is 373287580121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82464885889 + 38620896484 = 287167^2 + 196522^2 .

It is a cyclic number.

It is not a de Polignac number, because 121085782373 - 2² = 121085782369 is a prime.

It is a super-2 number, since 2×121085782373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121085782273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60542891186 + 60542891187.

It is an arithmetic number, because the mean of its divisors is an integer number (60542891187).

Almost surely, 2^121085782373 is an apocalyptic number.

It is an amenable number.

121085782373 is a deficient number, since it is larger than the sum of its proper divisors (1).

121085782373 is an equidigital number, since it uses as much as digits as its factorization.

121085782373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 121085782373 in words is "one hundred twenty-one billion, eighty-five million, seven hundred eighty-two thousand, three hundred seventy-three".