121043422979 has 2 divisors, whose sum is σ = 121043422980. Its totient is φ = 121043422978.

The previous prime is 121043422921. The next prime is 121043423041. The reversal of 121043422979 is 979224340121.

It is a weak prime.

It is an emirp because it is prime and its reverse (979224340121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121043422979 - 2²⁰ = 121042374403 is a prime.

It is not a weakly prime, because it can be changed into another prime (121043422079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60521711489 + 60521711490.

It is an arithmetic number, because the mean of its divisors is an integer number (60521711490).

Almost surely, 2^121043422979 is an apocalyptic number.

121043422979 is a deficient number, since it is larger than the sum of its proper divisors (1).

121043422979 is an equidigital number, since it uses as much as digits as its factorization.

121043422979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 121043422979 in words is "one hundred twenty-one billion, forty-three million, four hundred twenty-two thousand, nine hundred seventy-nine".