12120772 has 6 divisors (see below), whose sum is σ = 21211358. Its totient is φ = 6060384.

The previous prime is 12120767. The next prime is 12120781. The reversal of 12120772 is 27702121.

12120772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10394176 + 1726596 = 3224^2 + 1314^2 .

It is a super-2 number, since 2×12120772² = 293826227751968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515093 + ... + 1515100.

Almost surely, 2^12120772 is an apocalyptic number.

It is an amenable number.

12120772 is a deficient number, since it is larger than the sum of its proper divisors (9090586).

12120772 is a wasteful number, since it uses less digits than its factorization.

12120772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030197 (or 3030195 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12120772 is about 3481.4899109433. The cubic root of 12120772 is about 229.7083385570.

Adding to 12120772 its reverse (27702121), we get a palindrome (39822893).

The spelling of 12120772 in words is "twelve million, one hundred twenty thousand, seven hundred seventy-two".