1000123112011 has 2 divisors, whose sum is σ = 1000123112012. Its totient is φ = 1000123112010.

The previous prime is 1000123111979. The next prime is 1000123112069. The reversal of 1000123112011 is 1102113210001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000123112011 - 2⁵ = 1000123111979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000123111982 and 1000123112000.

It is not a weakly prime, because it can be changed into another prime (1000123112071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500061556005 + 500061556006.

It is an arithmetic number, because the mean of its divisors is an integer number (500061556006).

Almost surely, 2^{1000123112011} is an apocalyptic number.

1000123112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000123112011 is an equidigital number, since it uses as much as digits as its factorization.

1000123112011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1000123112011 its reverse (1102113210001), we get a palindrome (2102236322012).

The spelling of 1000123112011 in words is "one trillion, one hundred twenty-three million, one hundred twelve thousand, eleven".