111100022009 has 2 divisors, whose sum is σ = 111100022010. Its totient is φ = 111100022008.

The previous prime is 111100021999. The next prime is 111100022017. The reversal of 111100022009 is 900220001111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85280352784 + 25819669225 = 292028^2 + 160685^2 .

It is an emirp because it is prime and its reverse (900220001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111100022009 - 2⁴ = 111100021993 is a prime.

It is not a weakly prime, because it can be changed into another prime (111100022029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550011004 + 55550011005.

It is an arithmetic number, because the mean of its divisors is an integer number (55550011005).

Almost surely, 2^111100022009 is an apocalyptic number.

It is an amenable number.

111100022009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100022009 is an equidigital number, since it uses as much as digits as its factorization.

111100022009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 111100022009 in words is "one hundred eleven billion, one hundred million, twenty-two thousand, nine".