12212549 has 2 divisors, whose sum is σ = 12212550. Its totient is φ = 12212548.

The previous prime is 12212539. The next prime is 12212561. The reversal of 12212549 is 94521221.

12212549 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., 7059649 + 5152900 = 2657^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212549 - 2⁸ = 12212293 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106274 + 6106275.

It is an arithmetic number, because the mean of its divisors is an integer number (6106275).

Almost surely, 2^12212549 is an apocalyptic number.

It is an amenable number.

12212549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212549 is an equidigital number, since it uses as much as digits as its factorization.

12212549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 12212549 is about 3494.6457617332. The cubic root of 12212549 is about 230.2866558165.

The spelling of 12212549 in words is "twelve million, two hundred twelve thousand, five hundred forty-nine".