22796821 has 2 divisors, whose sum is σ = 22796822. Its totient is φ = 22796820.

The previous prime is 22796819. The next prime is 22796849. The reversal of 22796821 is 12869722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17222500 + 5574321 = 4150^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 22796821 - 2¹ = 22796819 is a prime.

Together with 22796819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22796801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11398410 + 11398411.

It is an arithmetic number, because the mean of its divisors is an integer number (11398411).

Almost surely, 2^22796821 is an apocalyptic number.

It is an amenable number.

22796821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22796821 is an equidigital number, since it uses as much as digits as its factorization.

22796821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 22796821 is about 4774.6016587774. The cubic root of 22796821 is about 283.5468082845.

The spelling of 22796821 in words is "twenty-two million, seven hundred ninety-six thousand, eight hundred twenty-one".