12223381 has 2 divisors, whose sum is σ = 12223382. Its totient is φ = 12223380.

The previous prime is 12223313. The next prime is 12223399. The reversal of 12223381 is 18332221.

12223381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 217156 = 3465^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223381 - 2⁹ = 12222869 is a prime.

It is a super-2 number, since 2×12223381² = 298822086142322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12226381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111690 + 6111691.

It is an arithmetic number, because the mean of its divisors is an integer number (6111691).

Almost surely, 2^12223381 is an apocalyptic number.

It is an amenable number.

12223381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223381 is an equidigital number, since it uses as much as digits as its factorization.

12223381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 12223381 is about 3496.1952176616. The cubic root of 12223381 is about 230.3547204475.

The spelling of 12223381 in words is "twelve million, two hundred twenty-three thousand, three hundred eighty-one".