12120077 has 2 divisors, whose sum is σ = 12120078. Its totient is φ = 12120076.

The previous prime is 12120071. The next prime is 12120079. The reversal of 12120077 is 77002121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6220036 + 5900041 = 2494^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120077 - 2⁴ = 12120061 is a prime.

Together with 12120079, 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 (12120071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060038 + 6060039.

It is an arithmetic number, because the mean of its divisors is an integer number (6060039).

Almost surely, 2^12120077 is an apocalyptic number.

It is an amenable number.

12120077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120077 is an equidigital number, since it uses as much as digits as its factorization.

12120077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 12120077 is about 3481.3900959243. The cubic root of 12120077 is about 229.7039480130.

Adding to 12120077 its reverse (77002121), we get a palindrome (89122198).

The spelling of 12120077 in words is "twelve million, one hundred twenty thousand, seventy-seven".