111122012222009 has 2 divisors, whose sum is σ = 111122012222010. Its totient is φ = 111122012222008.

The previous prime is 111122012221999. The next prime is 111122012222101. The reversal of 111122012222009 is 900222210221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106779568896400 + 4342443325609 = 10333420^2 + 2083853^2 .

It is an emirp because it is prime and its reverse (900222210221111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111122012222009 - 2⁴ = 111122012221993 is a prime.

It is not a weakly prime, because it can be changed into another prime (111122012222509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561006111004 + 55561006111005.

It is an arithmetic number, because the mean of its divisors is an integer number (55561006111005).

Almost surely, 2^{111122012222009} is an apocalyptic number.

It is an amenable number.

111122012222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122012222009 is an equidigital number, since it uses as much as digits as its factorization.

111122012222009 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 111122012222009 in words is "one hundred eleven trillion, one hundred twenty-two billion, twelve million, two hundred twenty-two thousand, nine".