23301221 has 2 divisors, whose sum is σ = 23301222. Its totient is φ = 23301220.

The previous prime is 23301209. The next prime is 23301233. The reversal of 23301221 is 12210332.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (23301209) and next prime (23301233).

It can be written as a sum of positive squares in only one way, i.e., 16900321 + 6400900 = 4111^2 + 2530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23301221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23301196 and 23301205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23301281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11650610 + 11650611.

It is an arithmetic number, because the mean of its divisors is an integer number (11650611).

Almost surely, 2^23301221 is an apocalyptic number.

It is an amenable number.

23301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23301221 is an equidigital number, since it uses as much as digits as its factorization.

23301221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23301221 is about 4827.1338286814. The cubic root of 23301221 is about 285.6228136110.

Adding to 23301221 its reverse (12210332), we get a palindrome (35511553).

The spelling of 23301221 in words is "twenty-three million, three hundred one thousand, two hundred twenty-one".