12120722 has 4 divisors (see below), whose sum is σ = 18181086. Its totient is φ = 6060360.

The previous prime is 12120709. The next prime is 12120737. The reversal of 12120722 is 22702121.

12120722 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: 22702121 = 13 ⋅1746317.

It can be written as a sum of positive squares in only one way, i.e., 11162281 + 958441 = 3341^2 + 979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12120722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030179 + ... + 3030182.

Almost surely, 2^12120722 is an apocalyptic number.

12120722 is a deficient number, since it is larger than the sum of its proper divisors (6060364).

12120722 is an equidigital number, since it uses as much as digits as its factorization.

12120722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060363.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 12120722 is about 3481.4827301022. The cubic root of 12120722 is about 229.7080226961.

Adding to 12120722 its reverse (22702121), we get a palindrome (34822843).

The spelling of 12120722 in words is "twelve million, one hundred twenty thousand, seven hundred twenty-two".