123123101101 has 24 divisors (see below), whose sum is σ = 168264147744. Its totient is φ = 88560067680.

The previous prime is 123123101089. The next prime is 123123101113. The reversal of 123123101101 is 101101321321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123123101089) and next prime (123123101113).

It is a de Polignac number, because none of the positive numbers 2^k-123123101101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123101201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8778715 + ... + 8792728.

It is an arithmetic number, because the mean of its divisors is an integer number (7011006156).

Almost surely, 2^123123101101 is an apocalyptic number.

123123101101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123123101101 is a deficient number, since it is larger than the sum of its proper divisors (45141046643).

123123101101 is a wasteful number, since it uses less digits than its factorization.

123123101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17571481 (or 17571474 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 123123101101 its reverse (101101321321), we get a palindrome (224224422422).

The spelling of 123123101101 in words is "one hundred twenty-three billion, one hundred twenty-three million, one hundred one thousand, one hundred one".