10400111123 has 4 divisors (see below), whose sum is σ = 10400316168. Its totient is φ = 10399906080.

The previous prime is 10400111011. The next prime is 10400111129. The reversal of 10400111123 is 32111100401.

10400111123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10400111123 is a prime.

It is a super-2 number, since 2×10400111123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10400111098 and 10400111107.

It is not an unprimeable number, because it can be changed into a prime (10400111129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35483 + ... + 148523.

It is an arithmetic number, because the mean of its divisors is an integer number (2600079042).

Almost surely, 2^10400111123 is an apocalyptic number.

10400111123 is a deficient number, since it is larger than the sum of its proper divisors (205045).

10400111123 is an equidigital number, since it uses as much as digits as its factorization.

10400111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205044.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10400111123 its reverse (32111100401), we get a palindrome (42511211524).

The spelling of 10400111123 in words is "ten billion, four hundred million, one hundred eleven thousand, one hundred twenty-three".