111013123009 has 2 divisors, whose sum is σ = 111013123010. Its totient is φ = 111013123008.

The previous prime is 111013123003. The next prime is 111013123021. The reversal of 111013123009 is 900321310111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56617823025 + 54395299984 = 237945^2 + 233228^2 .

It is a cyclic number.

It is not a de Polignac number, because 111013123009 - 2⁵ = 111013122977 is a prime.

It is a super-2 number, since 2×111013123009² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111013123003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506561504 + 55506561505.

It is an arithmetic number, because the mean of its divisors is an integer number (55506561505).

Almost surely, 2^111013123009 is an apocalyptic number.

It is an amenable number.

111013123009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111013123009 is an equidigital number, since it uses as much as digits as its factorization.

111013123009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 111013123009 in words is "one hundred eleven billion, thirteen million, one hundred twenty-three thousand, nine".