22471013 has 2 divisors, whose sum is σ = 22471014. Its totient is φ = 22471012.

The previous prime is 22470989. The next prime is 22471021. The reversal of 22471013 is 31017422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 1329409 = 4598^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 22471013 - 2²⁴ = 5693797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22471073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11235506 + 11235507.

It is an arithmetic number, because the mean of its divisors is an integer number (11235507).

Almost surely, 2^22471013 is an apocalyptic number.

It is an amenable number.

22471013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22471013 is an equidigital number, since it uses as much as digits as its factorization.

22471013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 22471013 is about 4740.3600074256. The cubic root of 22471013 is about 282.1895218471.

Adding to 22471013 its reverse (31017422), we get a palindrome (53488435).

The spelling of 22471013 in words is "twenty-two million, four hundred seventy-one thousand, thirteen".