12123354415 has 64 divisors (see below), whose sum is σ = 16646256000. Its totient is φ = 8420474880.

The previous prime is 12123354409. The next prime is 12123354437. The reversal of 12123354415 is 51445332121.

It is not a de Polignac number, because 12123354415 - 2¹³ = 12123346223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10737571 + ... + 10738699.

It is an arithmetic number, because the mean of its divisors is an integer number (260097750).

Almost surely, 2^12123354415 is an apocalyptic number.

12123354415 is a deficient number, since it is larger than the sum of its proper divisors (4522901585).

12123354415 is a wasteful number, since it uses less digits than its factorization.

12123354415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its digits is 14400, while the sum is 31.

Adding to 12123354415 its reverse (51445332121), we get a palindrome (63568686536).

The spelling of 12123354415 in words is "twelve billion, one hundred twenty-three million, three hundred fifty-four thousand, four hundred fifteen".