12120065 has 8 divisors (see below), whose sum is σ = 15399720. Its totient is φ = 9125632.

The previous prime is 12120061. The next prime is 12120067. The reversal of 12120065 is 56002121.

It can be written as a sum of positive squares in 4 ways, for example, as 231361 + 11888704 = 481^2 + 3448^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120065 - 2² = 12120061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (12120061) 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, 71210 + ... + 71379.

It is an arithmetic number, because the mean of its divisors is an integer number (1924965).

It is a Proth number, since it is equal to 2959 ⋅ 2¹² + 1 and 2959 < 2¹².

Almost surely, 2^12120065 is an apocalyptic number.

It is an amenable number.

12120065 is a deficient number, since it is larger than the sum of its proper divisors (3279655).

12120065 is a wasteful number, since it uses less digits than its factorization.

12120065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142611.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12120065 is about 3481.3883724744. The cubic root of 12120065 is about 229.7038722036.

Adding to 12120065 its reverse (56002121), we get a palindrome (68122186).

The spelling of 12120065 in words is "twelve million, one hundred twenty thousand, sixty-five".