22794221 has 2 divisors, whose sum is σ = 22794222. Its totient is φ = 22794220.

The previous prime is 22794217. The next prime is 22794227. The reversal of 22794221 is 12249722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20376196 + 2418025 = 4514^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 22794221 - 2² = 22794217 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1436069 and since 22794221 and 1436069 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22794227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11397110 + 11397111.

It is an arithmetic number, because the mean of its divisors is an integer number (11397111).

Almost surely, 2^22794221 is an apocalyptic number.

It is an amenable number.

22794221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22794221 is an equidigital number, since it uses as much as digits as its factorization.

22794221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 22794221 is about 4774.3293769911. The cubic root of 22794221 is about 283.5360282766.

The spelling of 22794221 in words is "twenty-two million, seven hundred ninety-four thousand, two hundred twenty-one".