12123481370641 has 3 divisors (see below), whose sum is σ = 12123484852521. Its totient is φ = 12123477888762.

The previous prime is 12123481370593. The next prime is 12123481370659. The reversal of 12123481370641 is 14607318432121.

The square root of 12123481370641 is 3481879.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12123481370641 - 2⁹ = 12123481370129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123481350641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1740940 + ... + 5222818.

It is an arithmetic number, because the mean of its divisors is an integer number (4041161617507).

Almost surely, 2^{12123481370641} is an apocalyptic number.

12123481370641 is the 3481879-th square number.

12123481370641 is the 1740940-th centered octagonal number.

It is an amenable number.

12123481370641 is a deficient number, since it is larger than the sum of its proper divisors (3481880).

12123481370641 is an frugal number, since it uses more digits than its factorization.

12123481370641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963758 (or 3481879 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 12123481370641 in words is "twelve trillion, one hundred twenty-three billion, four hundred eighty-one million, three hundred seventy thousand, six hundred forty-one".