12111401 has 4 divisors (see below), whose sum is σ = 12339972. Its totient is φ = 11882832.

The previous prime is 12111397. The next prime is 12111419. The reversal of 12111401 is 10411121.

12111401 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, and also an emirpimes, since its reverse is a distinct semiprime: 10411121 = 7 ⋅1487303.

It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 6255001 = 2420^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111401 - 2² = 12111397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114206 + ... + 114311.

It is an arithmetic number, because the mean of its divisors is an integer number (3084993).

Almost surely, 2^12111401 is an apocalyptic number.

It is an amenable number.

12111401 is a deficient number, since it is larger than the sum of its proper divisors (228571).

12111401 is an equidigital number, since it uses as much as digits as its factorization.

12111401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228570.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 12111401 is about 3480.1438188673. The cubic root of 12111401 is about 229.6491247317.

Adding to 12111401 its reverse (10411121), we get a palindrome (22522522).

The spelling of 12111401 in words is "twelve million, one hundred eleven thousand, four hundred one".