123012011103 has 4 divisors (see below), whose sum is σ = 164016014808. Its totient is φ = 82008007400.

The previous prime is 123012011099. The next prime is 123012011117. The reversal of 123012011103 is 301110210321.

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 123012011103 - 2² = 123012011099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012081103) 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, 20502001848 + ... + 20502001853.

It is an arithmetic number, because the mean of its divisors is an integer number (41004003702).

Almost surely, 2^123012011103 is an apocalyptic number.

123012011103 is a deficient number, since it is larger than the sum of its proper divisors (41004003705).

123012011103 is an equidigital number, since it uses as much as digits as its factorization.

123012011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41004003704.

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

Adding to 123012011103 its reverse (301110210321), we get a palindrome (424122221424).

The spelling of 123012011103 in words is "one hundred twenty-three billion, twelve million, eleven thousand, one hundred three".