12126161103502 has 4 divisors (see below), whose sum is σ = 18189241655256. Its totient is φ = 6063080551750.

The previous prime is 12126161103481. The next prime is 12126161103517. The reversal of 12126161103502 is 20530116162121.

12126161103502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3031540275874 + ... + 3031540275877.

It is an arithmetic number, because the mean of its divisors is an integer number (4547310413814).

Almost surely, 2^{12126161103502} is an apocalyptic number.

12126161103502 is a deficient number, since it is larger than the sum of its proper divisors (6063080551754).

12126161103502 is an equidigital number, since it uses as much as digits as its factorization.

12126161103502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063080551753.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 12126161103502 its reverse (20530116162121), we get a palindrome (32656277265623).

The spelling of 12126161103502 in words is "twelve trillion, one hundred twenty-six billion, one hundred sixty-one million, one hundred three thousand, five hundred two".