121020110219 has 2 divisors, whose sum is σ = 121020110220. Its totient is φ = 121020110218.

The previous prime is 121020110207. The next prime is 121020110227. The reversal of 121020110219 is 912011020121.

It is a strong prime.

It is an emirp because it is prime and its reverse (912011020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121020110219 - 2⁴ = 121020110203 is a prime.

It is a super-3 number, since 3×121020110219³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 121020110219.

It is not a weakly prime, because it can be changed into another prime (121020110249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510055109 + 60510055110.

It is an arithmetic number, because the mean of its divisors is an integer number (60510055110).

Almost surely, 2^121020110219 is an apocalyptic number.

121020110219 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020110219 is an equidigital number, since it uses as much as digits as its factorization.

121020110219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 121020110219 in words is "one hundred twenty-one billion, twenty million, one hundred ten thousand, two hundred nineteen".