12222212112109 has 2 divisors, whose sum is σ = 12222212112110. Its totient is φ = 12222212112108.

The previous prime is 12222212112043. The next prime is 12222212112127. The reversal of 12222212112109 is 90121121222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11084757866884 + 1137454245225 = 3329378^2 + 1066515^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222212112109 - 2¹³ = 12222212103917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222212110109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111106056054 + 6111106056055.

It is an arithmetic number, because the mean of its divisors is an integer number (6111106056055).

Almost surely, 2^{12222212112109} is an apocalyptic number.

It is an amenable number.

12222212112109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222212112109 is an equidigital number, since it uses as much as digits as its factorization.

12222212112109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 12222212112109 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twelve thousand, one hundred nine".