12872122 has 4 divisors (see below), whose sum is σ = 19308186. Its totient is φ = 6436060.

The previous prime is 12872117. The next prime is 12872131. The reversal of 12872122 is 22127821.

12872122 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: 22127821 = 79 ⋅280099.

It can be written as a sum of positive squares in only one way, i.e., 8415801 + 4456321 = 2901^2 + 2111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218029 + ... + 3218032.

Almost surely, 2^12872122 is an apocalyptic number.

12872122 is a deficient number, since it is larger than the sum of its proper divisors (6436064).

12872122 is an equidigital number, since it uses as much as digits as its factorization.

12872122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436063.

The product of its digits is 896, while the sum is 25.

The square root of 12872122 is about 3587.7739616648. The cubic root of 12872122 is about 234.3599423097.

Adding to 12872122 its reverse (22127821), we get a palindrome (34999943).

The spelling of 12872122 in words is "twelve million, eight hundred seventy-two thousand, one hundred twenty-two".