12147122 has 8 divisors (see below), whose sum is σ = 19622316. Its totient is φ = 5606352.

The previous prime is 12147101. The next prime is 12147131. The reversal of 12147122 is 22174121.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 43681 = 3479^2 + 209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12147094 and 12147103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233573 + ... + 233624.

Almost surely, 2^12147122 is an apocalyptic number.

12147122 is a deficient number, since it is larger than the sum of its proper divisors (7475194).

12147122 is a wasteful number, since it uses less digits than its factorization.

12147122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467212.

The product of its digits is 224, while the sum is 20.

The square root of 12147122 is about 3485.2721558007. The cubic root of 12147122 is about 229.8746765271.

The spelling of 12147122 in words is "twelve million, one hundred forty-seven thousand, one hundred twenty-two".