121230213079 has 2 divisors, whose sum is σ = 121230213080. Its totient is φ = 121230213078.

The previous prime is 121230213073. The next prime is 121230213107. The reversal of 121230213079 is 970312032121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121230213079 - 2¹⁷ = 121230082007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121230213079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121230213073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615106539 + 60615106540.

It is an arithmetic number, because the mean of its divisors is an integer number (60615106540).

Almost surely, 2^121230213079 is an apocalyptic number.

121230213079 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230213079 is an equidigital number, since it uses as much as digits as its factorization.

121230213079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 121230213079 in words is "one hundred twenty-one billion, two hundred thirty million, two hundred thirteen thousand, seventy-nine".