1200201201977 has 2 divisors, whose sum is σ = 1200201201978. Its totient is φ = 1200201201976.

The previous prime is 1200201201971. The next prime is 1200201202027. The reversal of 1200201201977 is 7791021020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660040880041 + 540160321936 = 812429^2 + 734956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200201201977 - 2⁴ = 1200201201961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200201201971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600100600988 + 600100600989.

It is an arithmetic number, because the mean of its divisors is an integer number (600100600989).

Almost surely, 2^{1200201201977} is an apocalyptic number.

It is an amenable number.

1200201201977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200201201977 is an equidigital number, since it uses as much as digits as its factorization.

1200201201977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

Adding to 1200201201977 its reverse (7791021020021), we get a palindrome (8991222221998).

The spelling of 1200201201977 in words is "one trillion, two hundred billion, two hundred one million, two hundred one thousand, nine hundred seventy-seven".