12092221 has 2 divisors, whose sum is σ = 12092222. Its totient is φ = 12092220.

The previous prime is 12092209. The next prime is 12092237. The reversal of 12092221 is 12229021.

12092221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9369721 + 2722500 = 3061^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 12092221 - 2¹¹ = 12090173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12099221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6046110 + 6046111.

It is an arithmetic number, because the mean of its divisors is an integer number (6046111).

Almost surely, 2^12092221 is an apocalyptic number.

It is an amenable number.

12092221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12092221 is an equidigital number, since it uses as much as digits as its factorization.

12092221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12092221 is about 3477.3870937818. The cubic root of 12092221 is about 229.5278341288.

The spelling of 12092221 in words is "twelve million, ninety-two thousand, two hundred twenty-one".