12120221109077 has 2 divisors, whose sum is σ = 12120221109078. Its totient is φ = 12120221109076.

The previous prime is 12120221109013. The next prime is 12120221109131. The reversal of 12120221109077 is 77090112202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12030034412356 + 90186696721 = 3468434^2 + 300311^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120221109077 - 2⁶ = 12120221109013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120221109377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060110554538 + 6060110554539.

It is an arithmetic number, because the mean of its divisors is an integer number (6060110554539).

Almost surely, 2^{12120221109077} is an apocalyptic number.

It is an amenable number.

12120221109077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120221109077 is an equidigital number, since it uses as much as digits as its factorization.

12120221109077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 12120221109077 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, one hundred nine thousand, seventy-seven".