20111311127 has 2 divisors, whose sum is σ = 20111311128. Its totient is φ = 20111311126.

The previous prime is 20111311081. The next prime is 20111311133. The reversal of 20111311127 is 72111311102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111311127 - 2⁶ = 20111311063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111311099 and 20111311108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111311147) 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, 10055655563 + 10055655564.

It is an arithmetic number, because the mean of its divisors is an integer number (10055655564).

Almost surely, 2^20111311127 is an apocalyptic number.

20111311127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111311127 is an equidigital number, since it uses as much as digits as its factorization.

20111311127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 20111311127 its reverse (72111311102), we get a palindrome (92222622229).

The spelling of 20111311127 in words is "twenty billion, one hundred eleven million, three hundred eleven thousand, one hundred twenty-seven".