121020012188279 has 2 divisors, whose sum is σ = 121020012188280. Its totient is φ = 121020012188278.

The previous prime is 121020012188237. The next prime is 121020012188297. The reversal of 121020012188279 is 972881210020121.

Together with next prime (121020012188297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020012188279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020012181279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510006094139 + 60510006094140.

It is an arithmetic number, because the mean of its divisors is an integer number (60510006094140).

Almost surely, 2^{121020012188279} is an apocalyptic number.

121020012188279 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020012188279 is an equidigital number, since it uses as much as digits as its factorization.

121020012188279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 44.

The spelling of 121020012188279 in words is "one hundred twenty-one trillion, twenty billion, twelve million, one hundred eighty-eight thousand, two hundred seventy-nine".