12111210638157 has 8 divisors (see below), whose sum is σ = 16148298789280. Its totient is φ = 8074131456240.

The previous prime is 12111210638129. The next prime is 12111210638237. The reversal of 12111210638157 is 75183601211121.

12111210638157 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 not a de Polignac number, because 12111210638157 - 2¹⁴ = 12111210621773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111210638117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121819 + ... + 5359527.

It is an arithmetic number, because the mean of its divisors is an integer number (2018537348660).

Almost surely, 2^{12111210638157} is an apocalyptic number.

It is an amenable number.

12111210638157 is a deficient number, since it is larger than the sum of its proper divisors (4037088151123).

12111210638157 is a wasteful number, since it uses less digits than its factorization.

12111210638157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484603.

The product of its (nonzero) digits is 20160, while the sum is 39.

Adding to 12111210638157 its reverse (75183601211121), we get a palindrome (87294811849278).

The spelling of 12111210638157 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, six hundred thirty-eight thousand, one hundred fifty-seven".