12120311 has 8 divisors (see below), whose sum is σ = 14087040. Its totient is φ = 10212408.

The previous prime is 12120307. The next prime is 12120343. The reversal of 12120311 is 11302121.

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 12120311 - 2² = 12120307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120292 and 12120301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120301) 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, 14261 + ... + 15086.

It is an arithmetic number, because the mean of its divisors is an integer number (1760880).

Almost surely, 2^12120311 is an apocalyptic number.

12120311 is a deficient number, since it is larger than the sum of its proper divisors (1966729).

12120311 is an equidigital number, since it uses as much as digits as its factorization.

12120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29413.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12120311 is about 3481.4237030273. The cubic root of 12120311 is about 229.7054262869.

Adding to 12120311 its reverse (11302121), we get a palindrome (23422432).

The spelling of 12120311 in words is "twelve million, one hundred twenty thousand, three hundred eleven".