12143122 has 4 divisors (see below), whose sum is σ = 18214686. Its totient is φ = 6071560.

The previous prime is 12143119. The next prime is 12143137. The reversal of 12143122 is 22134121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22134121 = 43 ⋅514747.

It can be written as a sum of positive squares in only one way, i.e., 9979281 + 2163841 = 3159^2 + 1471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12143096 and 12143105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3035779 + ... + 3035782.

Almost surely, 2^12143122 is an apocalyptic number.

12143122 is a deficient number, since it is larger than the sum of its proper divisors (6071564).

12143122 is an equidigital number, since it uses as much as digits as its factorization.

12143122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071563.

The product of its digits is 96, while the sum is 16.

The square root of 12143122 is about 3484.6982652735. The cubic root of 12143122 is about 229.8494414782.

Adding to 12143122 its reverse (22134121), we get a palindrome (34277243).

Subtracting 12143122 from its reverse (22134121), we obtain a palindrome (9990999).

The spelling of 12143122 in words is "twelve million, one hundred forty-three thousand, one hundred twenty-two".