12822861 has 4 divisors (see below), whose sum is σ = 17097152. Its totient is φ = 8548572.

The previous prime is 12822851. The next prime is 12822863. The reversal of 12822861 is 16822821.

12822861 is digitally balanced in base 2, base 3 and base 4, because in such bases 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12822861 - 2⁵ = 12822829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12822863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137141 + ... + 2137146.

It is an arithmetic number, because the mean of its divisors is an integer number (4274288).

Almost surely, 2^12822861 is an apocalyptic number.

It is an amenable number.

12822861 is a deficient number, since it is larger than the sum of its proper divisors (4274291).

12822861 is an equidigital number, since it uses as much as digits as its factorization.

12822861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274290.

The product of its digits is 3072, while the sum is 30.

The square root of 12822861 is about 3580.9022606042. The cubic root of 12822861 is about 234.0605986674.

The spelling of 12822861 in words is "twelve million, eight hundred twenty-two thousand, eight hundred sixty-one".