22402271 has 2 divisors, whose sum is σ = 22402272. Its totient is φ = 22402270.

The previous prime is 22402223. The next prime is 22402283. The reversal of 22402271 is 17220422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22402271 - 2¹⁴ = 22385887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22402291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11201135 + 11201136.

It is an arithmetic number, because the mean of its divisors is an integer number (11201136).

Almost surely, 2^22402271 is an apocalyptic number.

22402271 is a deficient number, since it is larger than the sum of its proper divisors (1).

22402271 is an equidigital number, since it uses as much as digits as its factorization.

22402271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22402271 is about 4733.1037385631. The cubic root of 22402271 is about 281.9014753984.

Adding to 22402271 its reverse (17220422), we get a palindrome (39622693).

The spelling of 22402271 in words is "twenty-two million, four hundred two thousand, two hundred seventy-one".