2122122211109 has 2 divisors, whose sum is σ = 2122122211110. Its totient is φ = 2122122211108.

The previous prime is 2122122211067. The next prime is 2122122211199. The reversal of 2122122211109 is 9011122212212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2108167514209 + 13954696900 = 1451953^2 + 118130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122122211109 - 2¹² = 2122122207013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122122211199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061061105554 + 1061061105555.

It is an arithmetic number, because the mean of its divisors is an integer number (1061061105555).

Almost surely, 2^{2122122211109} is an apocalyptic number.

It is an amenable number.

2122122211109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122122211109 is an equidigital number, since it uses as much as digits as its factorization.

2122122211109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 2122122211109 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred nine".