1230326221 has 2 divisors, whose sum is σ = 1230326222. Its totient is φ = 1230326220.

The previous prime is 1230326213. The next prime is 1230326239. The reversal of 1230326221 is 1226230321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854392900 + 375933321 = 29230^2 + 19389^2 .

It is an emirp because it is prime and its reverse (1226230321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1230326221 - 2³ = 1230326213 is a prime.

It is a super-2 number, since 2×1230326221² = 3027405220160281682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230326192 and 1230326201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230326521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615163110 + 615163111.

It is an arithmetic number, because the mean of its divisors is an integer number (615163111).

Almost surely, 2^1230326221 is an apocalyptic number.

It is an amenable number.

1230326221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230326221 is an equidigital number, since it uses as much as digits as its factorization.

1230326221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1230326221 is about 35076.0063433681. The cubic root of 1230326221 is about 1071.5359839852.

Adding to 1230326221 its reverse (1226230321), we get a palindrome (2456556542).

The spelling of 1230326221 in words is "one billion, two hundred thirty million, three hundred twenty-six thousand, two hundred twenty-one".