12212100122009 has 2 divisors, whose sum is σ = 12212100122010. Its totient is φ = 12212100122008.

The previous prime is 12212100121997. The next prime is 12212100122021. The reversal of 12212100122009 is 90022100121221.

It is a balanced prime because it is at equal distance from previous prime (12212100121997) and next prime (12212100122021).

It can be written as a sum of positive squares in only one way, i.e., 12199456243984 + 12643878025 = 3492772^2 + 112445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212100122009 - 2¹² = 12212100117913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212100122039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106050061004 + 6106050061005.

It is an arithmetic number, because the mean of its divisors is an integer number (6106050061005).

Almost surely, 2^{12212100122009} is an apocalyptic number.

It is an amenable number.

12212100122009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212100122009 is an equidigital number, since it uses as much as digits as its factorization.

12212100122009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12212100122009 in words is "twelve trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, nine".