111010111222009 has 2 divisors, whose sum is σ = 111010111222010. Its totient is φ = 111010111222008.

The previous prime is 111010111221929. The next prime is 111010111222013. The reversal of 111010111222009 is 900222111010111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104872243711225 + 6137867510784 = 10240715^2 + 2477472^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010111222009 - 2¹³ = 111010111213817 is a prime.

It is not a weakly prime, because it can be changed into another prime (111010114222009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505055611004 + 55505055611005.

It is an arithmetic number, because the mean of its divisors is an integer number (55505055611005).

Almost surely, 2^{111010111222009} is an apocalyptic number.

It is an amenable number.

111010111222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010111222009 is an equidigital number, since it uses as much as digits as its factorization.

111010111222009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 111010111222009 in words is "one hundred eleven trillion, ten billion, one hundred eleven million, two hundred twenty-two thousand, nine".