12212077 has 2 divisors, whose sum is σ = 12212078. Its totient is φ = 12212076.

The previous prime is 12212063. The next prime is 12212087. The reversal of 12212077 is 77021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11930116 + 281961 = 3454^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212077 - 2⁷ = 12211949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106038 + 6106039.

It is an arithmetic number, because the mean of its divisors is an integer number (6106039).

Almost surely, 2^12212077 is an apocalyptic number.

It is an amenable number.

12212077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212077 is an equidigital number, since it uses as much as digits as its factorization.

12212077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12212077 is about 3494.5782292002. The cubic root of 12212077 is about 230.2836890129.

Adding to 12212077 its reverse (77021221), we get a palindrome (89233298).

The spelling of 12212077 in words is "twelve million, two hundred twelve thousand, seventy-seven".