20012011277 has 2 divisors, whose sum is σ = 20012011278. Its totient is φ = 20012011276.

The previous prime is 20012011169. The next prime is 20012011289. The reversal of 20012011277 is 77211021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17854037161 + 2157974116 = 133619^2 + 46454^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012011277 - 2¹⁰ = 20012010253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012011477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006005638 + 10006005639.

It is an arithmetic number, because the mean of its divisors is an integer number (10006005639).

Almost surely, 2^20012011277 is an apocalyptic number.

It is an amenable number.

20012011277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012011277 is an equidigital number, since it uses as much as digits as its factorization.

20012011277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 20012011277 its reverse (77211021002), we get a palindrome (97223032279).

The spelling of 20012011277 in words is "twenty billion, twelve million, eleven thousand, two hundred seventy-seven".