20221343 has 2 divisors, whose sum is σ = 20221344. Its totient is φ = 20221342.

The previous prime is 20221319. The next prime is 20221379. The reversal of 20221343 is 34312202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20221343 - 2⁸ = 20221087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110671 + 10110672.

It is an arithmetic number, because the mean of its divisors is an integer number (10110672).

Almost surely, 2^20221343 is an apocalyptic number.

20221343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221343 is an equidigital number, since it uses as much as digits as its factorization.

20221343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20221343 is about 4496.8147615840. The cubic root of 20221343 is about 272.4394523615.

Adding to 20221343 its reverse (34312202), we get a palindrome (54533545).

The spelling of 20221343 in words is "twenty million, two hundred twenty-one thousand, three hundred forty-three".