1232221 has 2 divisors, whose sum is σ = 1232222. Its totient is φ = 1232220.

The previous prime is 1232213. The next prime is 1232227. The reversal of 1232221 is 1222321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 121 = 1110^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232221 - 2³ = 1232213 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 (1232227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616110 + 616111.

It is an arithmetic number, because the mean of its divisors is an integer number (616111).

2^1232221 is an apocalyptic number.

It is an amenable number.

1232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232221 is an equidigital number, since it uses as much as digits as its factorization.

1232221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 13.

The square root of 1232221 is about 1110.0545031664. The cubic root of 1232221 is about 107.2085779224.

Adding to 1232221 its reverse (1222321), we get a palindrome (2454542).

It can be divided in two parts, 1232 and 221, that multiplied together give a palindrome (272272).

The spelling of 1232221 in words is "one million, two hundred thirty-two thousand, two hundred twenty-one".