19228211 has 2 divisors, whose sum is σ = 19228212. Its totient is φ = 19228210.

The previous prime is 19228201. The next prime is 19228229. The reversal of 19228211 is 11282291.

It is a weak prime.

It is an emirp because it is prime and its reverse (11282291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19228211 - 2⁶ = 19228147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (19228201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9614105 + 9614106.

It is an arithmetic number, because the mean of its divisors is an integer number (9614106).

Almost surely, 2^19228211 is an apocalyptic number.

19228211 is a deficient number, since it is larger than the sum of its proper divisors (1).

19228211 is an equidigital number, since it uses as much as digits as its factorization.

19228211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

The square root of 19228211 is about 4384.9984036485. The cubic root of 19228211 is about 267.9042642754.

The spelling of 19228211 in words is "nineteen million, two hundred twenty-eight thousand, two hundred eleven".