12111111454 has 8 divisors (see below), whose sum is σ = 19564103160. Its totient is φ = 5589743736.

The previous prime is 12111111451. The next prime is 12111111517. The reversal of 12111111454 is 45411111121.

It is a happy number.

12111111454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111111451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232905964 + ... + 232906015.

It is an arithmetic number, because the mean of its divisors is an integer number (2445512895).

Almost surely, 2^12111111454 is an apocalyptic number.

12111111454 is a deficient number, since it is larger than the sum of its proper divisors (7452991706).

12111111454 is a wasteful number, since it uses less digits than its factorization.

12111111454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465811994.

The product of its digits is 160, while the sum is 22.

Adding to 12111111454 its reverse (45411111121), we get a palindrome (57522222575).

The spelling of 12111111454 in words is "twelve billion, one hundred eleven million, one hundred eleven thousand, four hundred fifty-four".