12120481 has 4 divisors (see below), whose sum is σ = 12291264. Its totient is φ = 11949700.

The previous prime is 12120469. The next prime is 12120487. The reversal of 12120481 is 18402121.

It is a happy number.

12120481 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18402121 = 1019 ⋅18059.

It is a cyclic number.

It is not a de Polignac number, because 12120481 - 2¹⁷ = 11989409 is a prime.

It is a super-2 number, since 2×12120481² = 293812119342722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120487) 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, 85285 + ... + 85426.

It is an arithmetic number, because the mean of its divisors is an integer number (3072816).

Almost surely, 2^12120481 is an apocalyptic number.

It is an amenable number.

12120481 is a deficient number, since it is larger than the sum of its proper divisors (170783).

12120481 is an equidigital number, since it uses as much as digits as its factorization.

12120481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170782.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 12120481 is about 3481.4481182405. The cubic root of 12120481 is about 229.7065002346.

It can be divided in two parts, 121 and 20481, that added together give a palindrome (20602).

The spelling of 12120481 in words is "twelve million, one hundred twenty thousand, four hundred eighty-one".