12119221 has 2 divisors, whose sum is σ = 12119222. Its totient is φ = 12119220.

The previous prime is 12119197. The next prime is 12119267. The reversal of 12119221 is 12291121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 5692996 = 2535^2 + 2386^2 .

It is an emirp because it is prime and its reverse (12291121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12119221 - 2²¹ = 10022069 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 (12119281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059610 + 6059611.

It is an arithmetic number, because the mean of its divisors is an integer number (6059611).

Almost surely, 2^12119221 is an apocalyptic number.

It is an amenable number.

12119221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12119221 is an equidigital number, since it uses as much as digits as its factorization.

12119221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

The square root of 12119221 is about 3481.2671543563. The cubic root of 12119221 is about 229.6985401484.

The spelling of 12119221 in words is "twelve million, one hundred nineteen thousand, two hundred twenty-one".