11100404123 has 2 divisors, whose sum is σ = 11100404124. Its totient is φ = 11100404122.

The previous prime is 11100404101. The next prime is 11100404129. The reversal of 11100404123 is 32140400111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11100404123 - 2⁶ = 11100404059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11100404129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550202061 + 5550202062.

It is an arithmetic number, because the mean of its divisors is an integer number (5550202062).

Almost surely, 2^11100404123 is an apocalyptic number.

11100404123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100404123 is an equidigital number, since it uses as much as digits as its factorization.

11100404123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11100404123 its reverse (32140400111), we get a palindrome (43240804234).

The spelling of 11100404123 in words is "eleven billion, one hundred million, four hundred four thousand, one hundred twenty-three".