11100312123 has 4 divisors (see below), whose sum is σ = 14800416168. Its totient is φ = 7400208080.

The previous prime is 11100312089. The next prime is 11100312127. The reversal of 11100312123 is 32121300111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11100312123 - 2⁹ = 11100311611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100312127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850052018 + ... + 1850052023.

It is an arithmetic number, because the mean of its divisors is an integer number (3700104042).

Almost surely, 2^11100312123 is an apocalyptic number.

11100312123 is a deficient number, since it is larger than the sum of its proper divisors (3700104045).

11100312123 is an equidigital number, since it uses as much as digits as its factorization.

11100312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700104044.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11100312123 its reverse (32121300111), we get a palindrome (43221612234).

The spelling of 11100312123 in words is "eleven billion, one hundred million, three hundred twelve thousand, one hundred twenty-three".