11001001010123 has 2 divisors, whose sum is σ = 11001001010124. Its totient is φ = 11001001010122.

The previous prime is 11001001010107. The next prime is 11001001010141. The reversal of 11001001010123 is 32101010010011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001001010123 - 2⁴ = 11001001010107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001021010123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500500505061 + 5500500505062.

It is an arithmetic number, because the mean of its divisors is an integer number (5500500505062).

Almost surely, 2^{11001001010123} is an apocalyptic number.

11001001010123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001001010123 is an equidigital number, since it uses as much as digits as its factorization.

11001001010123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11001001010123 its reverse (32101010010011), we get a palindrome (43102011020134).

The spelling of 11001001010123 in words is "eleven trillion, one billion, one million, ten thousand, one hundred twenty-three".