121110020211109 has 2 divisors, whose sum is σ = 121110020211110. Its totient is φ = 121110020211108.

The previous prime is 121110020211041. The next prime is 121110020211211. The reversal of 121110020211109 is 901112020011121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79585489944900 + 41524530266209 = 8921070^2 + 6443953^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110020211109 - 2¹⁵ = 121110020178341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121110020211109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121110020214109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555010105554 + 60555010105555.

It is an arithmetic number, because the mean of its divisors is an integer number (60555010105555).

Almost surely, 2^{121110020211109} is an apocalyptic number.

It is an amenable number.

121110020211109 is a deficient number, since it is larger than the sum of its proper divisors (1).

121110020211109 is an equidigital number, since it uses as much as digits as its factorization.

121110020211109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 121110020211109 in words is "one hundred twenty-one trillion, one hundred ten billion, twenty million, two hundred eleven thousand, one hundred nine".