1100111321009 has 2 divisors, whose sum is σ = 1100111321010. Its totient is φ = 1100111321008.

The previous prime is 1100111320991. The next prime is 1100111321041. The reversal of 1100111321009 is 9001231110011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071788113984 + 28323207025 = 1035272^2 + 168295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100111321009 is a prime.

It is a super-2 number, since 2×1100111321009² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100111321209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550055660504 + 550055660505.

It is an arithmetic number, because the mean of its divisors is an integer number (550055660505).

Almost surely, 2^{1100111321009} is an apocalyptic number.

It is an amenable number.

1100111321009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100111321009 is an equidigital number, since it uses as much as digits as its factorization.

1100111321009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 1100111321009 in words is "one trillion, one hundred billion, one hundred eleven million, three hundred twenty-one thousand, nine".