12401161 has 4 divisors (see below), whose sum is σ = 12417300. Its totient is φ = 12385024.

The previous prime is 12401153. The next prime is 12401173. The reversal of 12401161 is 16110421.

12401161 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: 16110421 = 31 ⋅519691.

It can be written as a sum of positive squares in 2 ways, for example, as 5929225 + 6471936 = 2435^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401161 - 2³ = 12401153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401101) 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, 6856 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (3104325).

Almost surely, 2^12401161 is an apocalyptic number.

It is an amenable number.

12401161 is a deficient number, since it is larger than the sum of its proper divisors (16139).

12401161 is an equidigital number, since it uses as much as digits as its factorization.

12401161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12401161 is about 3521.5282193957. The cubic root of 12401161 is about 231.4661289849.

Adding to 12401161 its reverse (16110421), we get a palindrome (28511582).

It can be divided in two parts, 1240 and 1161, that added together give a 4-th power (2401 = 7⁴).

The spelling of 12401161 in words is "twelve million, four hundred one thousand, one hundred sixty-one".