12822161 has 8 divisors (see below), whose sum is σ = 14124864. Its totient is φ = 11542320.

The previous prime is 12822151. The next prime is 12822179. The reversal of 12822161 is 16122821.

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

It is a cyclic number.

It is not a de Polignac number, because 12822161 - 2¹⁸ = 12560017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12822101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4526 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (1765608).

Almost surely, 2^12822161 is an apocalyptic number.

12822161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12822161 is a deficient number, since it is larger than the sum of its proper divisors (1302703).

12822161 is a wasteful number, since it uses less digits than its factorization.

12822161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431.

The product of its digits is 384, while the sum is 23.

The square root of 12822161 is about 3580.8045185405. The cubic root of 12822161 is about 234.0563394671.

Adding to 12822161 its reverse (16122821), we get a palindrome (28944982).

It can be divided in two parts, 1282 and 2161, that added together give a palindrome (3443).

The spelling of 12822161 in words is "twelve million, eight hundred twenty-two thousand, one hundred sixty-one".