12121022103109 has 2 divisors, whose sum is σ = 12121022103110. Its totient is φ = 12121022103108.

The previous prime is 12121022103103. The next prime is 12121022103143. The reversal of 12121022103109 is 90130122012121.

12121022103109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12020851752100 + 100170351009 = 3467110^2 + 316497^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121022103109 - 2³ = 12121022103101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121022103101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060511051554 + 6060511051555.

It is an arithmetic number, because the mean of its divisors is an integer number (6060511051555).

Almost surely, 2^{12121022103109} is an apocalyptic number.

It is an amenable number.

12121022103109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121022103109 is an equidigital number, since it uses as much as digits as its factorization.

12121022103109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 12121022103109 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, one hundred three thousand, one hundred nine".