1123201110023 has 2 divisors, whose sum is σ = 1123201110024. Its totient is φ = 1123201110022.

The previous prime is 1123201110019. The next prime is 1123201110131. The reversal of 1123201110023 is 3200111023211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123201110023 - 2² = 1123201110019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123201109983 and 1123201110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123201110013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561600555011 + 561600555012.

It is an arithmetic number, because the mean of its divisors is an integer number (561600555012).

Almost surely, 2^{1123201110023} is an apocalyptic number.

1123201110023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123201110023 is an equidigital number, since it uses as much as digits as its factorization.

1123201110023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1123201110023 its reverse (3200111023211), we get a palindrome (4323312133234).

The spelling of 1123201110023 in words is "one trillion, one hundred twenty-three billion, two hundred one million, one hundred ten thousand, twenty-three".