12011221199977 has 2 divisors, whose sum is σ = 12011221199978. Its totient is φ = 12011221199976.

The previous prime is 12011221199911. The next prime is 12011221200019. The reversal of 12011221199977 is 77999112211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11863726029376 + 147495170601 = 3444376^2 + 384051^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011221199977 - 2⁷ = 12011221199849 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011221199077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005610599988 + 6005610599989.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610599989).

Almost surely, 2^{12011221199977} is an apocalyptic number.

It is an amenable number.

12011221199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011221199977 is an equidigital number, since it uses as much as digits as its factorization.

12011221199977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 52.

The spelling of 12011221199977 in words is "twelve trillion, eleven billion, two hundred twenty-one million, one hundred ninety-nine thousand, nine hundred seventy-seven".