12213077 has 2 divisors, whose sum is σ = 12213078. Its totient is φ = 12213076.

The previous prime is 12213073. The next prime is 12213079. The reversal of 12213077 is 77031221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12208036 + 5041 = 3494^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213077 - 2² = 12213073 is a prime.

Together with 12213079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106538 + 6106539.

It is an arithmetic number, because the mean of its divisors is an integer number (6106539).

Almost surely, 2^12213077 is an apocalyptic number.

It is an amenable number.

12213077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213077 is an equidigital number, since it uses as much as digits as its factorization.

12213077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12213077 is about 3494.7213050542. The cubic root of 12213077 is about 230.2899745231.

Adding to 12213077 its reverse (77031221), we get a palindrome (89244298).

The spelling of 12213077 in words is "twelve million, two hundred thirteen thousand, seventy-seven".