338675221 has 2 divisors, whose sum is σ = 338675222. Its totient is φ = 338675220.

The previous prime is 338675203. The next prime is 338675231. The reversal of 338675221 is 122576833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335988900 + 2686321 = 18330^2 + 1639^2 .

It is an emirp because it is prime and its reverse (122576833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338675221 - 2⁹ = 338674709 is a prime.

It is a super-2 number, since 2×338675221² = 229401810638797682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338675201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169337610 + 169337611.

It is an arithmetic number, because the mean of its divisors is an integer number (169337611).

Almost surely, 2^338675221 is an apocalyptic number.

It is an amenable number.

338675221 is a deficient number, since it is larger than the sum of its proper divisors (1).

338675221 is an equidigital number, since it uses as much as digits as its factorization.

338675221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 338675221 is about 18403.1307390889. The cubic root of 338675221 is about 697.0455210909.

The spelling of 338675221 in words is "three hundred thirty-eight million, six hundred seventy-five thousand, two hundred twenty-one".