121992385379 has 2 divisors, whose sum is σ = 121992385380. Its totient is φ = 121992385378.

The previous prime is 121992385327. The next prime is 121992385393. The reversal of 121992385379 is 973583299121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (973583299121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121992385379 - 2²⁴ = 121975608163 is a prime.

It is not a weakly prime, because it can be changed into another prime (121992388379) 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, 60996192689 + 60996192690.

It is an arithmetic number, because the mean of its divisors is an integer number (60996192690).

Almost surely, 2^121992385379 is an apocalyptic number.

121992385379 is a deficient number, since it is larger than the sum of its proper divisors (1).

121992385379 is an equidigital number, since it uses as much as digits as its factorization.

121992385379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 59.

The spelling of 121992385379 in words is "one hundred twenty-one billion, nine hundred ninety-two million, three hundred eighty-five thousand, three hundred seventy-nine".