1201011747877 has 2 divisors, whose sum is σ = 1201011747878. Its totient is φ = 1201011747876.

The previous prime is 1201011747851. The next prime is 1201011747883. The reversal of 1201011747877 is 7787471101021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193755093281 + 7256654596 = 1092591^2 + 85186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201011747877 is a prime.

It is a super-2 number, since 2×1201011747877² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201011747827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600505873938 + 600505873939.

It is an arithmetic number, because the mean of its divisors is an integer number (600505873939).

Almost surely, 2^{1201011747877} is an apocalyptic number.

It is an amenable number.

1201011747877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201011747877 is an equidigital number, since it uses as much as digits as its factorization.

1201011747877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153664, while the sum is 46.

Adding to 1201011747877 its reverse (7787471101021), we get a palindrome (8988482848898).

The spelling of 1201011747877 in words is "one trillion, two hundred one billion, eleven million, seven hundred forty-seven thousand, eight hundred seventy-seven".