12123101115 has 48 divisors (see below), whose sum is σ = 23073549408. Its totient is φ = 6085310976.

The previous prime is 12123101077. The next prime is 12123101161. The reversal of 12123101115 is 51110132121.

It is not a de Polignac number, because 12123101115 - 2⁹ = 12123100603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 272812 + ... + 314121.

It is an arithmetic number, because the mean of its divisors is an integer number (480698946).

Almost surely, 2^12123101115 is an apocalyptic number.

12123101115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12123101115 is a deficient number, since it is larger than the sum of its proper divisors (10950448293).

12123101115 is an equidigital number, since it uses as much as digits as its factorization.

12123101115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586970 (or 586958 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 12123101115 its reverse (51110132121), we get a palindrome (63233233236).

The spelling of 12123101115 in words is "twelve billion, one hundred twenty-three million, one hundred one thousand, one hundred fifteen".