111122011222009 has 2 divisors, whose sum is σ = 111122011222010. Its totient is φ = 111122011222008.

The previous prime is 111122011221971. The next prime is 111122011222043. The reversal of 111122011222009 is 900222110221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108315223651600 + 2806787570409 = 10407460^2 + 1675347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122011222009 is a prime.

It is not a weakly prime, because it can be changed into another prime (111122011225009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561005611004 + 55561005611005.

It is an arithmetic number, because the mean of its divisors is an integer number (55561005611005).

Almost surely, 2^{111122011222009} is an apocalyptic number.

It is an amenable number.

111122011222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122011222009 is an equidigital number, since it uses as much as digits as its factorization.

111122011222009 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 25.

The spelling of 111122011222009 in words is "one hundred eleven trillion, one hundred twenty-two billion, eleven million, two hundred twenty-two thousand, nine".