12761121 has 4 divisors (see below), whose sum is σ = 17014832. Its totient is φ = 8507412.

The previous prime is 12761083. The next prime is 12761123. The reversal of 12761121 is 12116721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12116721 = 3 ⋅4038907.

It is not a de Polignac number, because 12761121 - 2¹⁸ = 12498977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12761123) 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, 2126851 + ... + 2126856.

It is an arithmetic number, because the mean of its divisors is an integer number (4253708).

Almost surely, 2^12761121 is an apocalyptic number.

It is an amenable number.

12761121 is a deficient number, since it is larger than the sum of its proper divisors (4253711).

12761121 is an equidigital number, since it uses as much as digits as its factorization.

12761121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253710.

The product of its digits is 168, while the sum is 21.

The square root of 12761121 is about 3572.2711263285. The cubic root of 12761121 is about 233.6843395128.

Adding to 12761121 its reverse (12116721), we get a palindrome (24877842).

The spelling of 12761121 in words is "twelve million, seven hundred sixty-one thousand, one hundred twenty-one".