20110111001027 has 2 divisors, whose sum is σ = 20110111001028. Its totient is φ = 20110111001026.

The previous prime is 20110111001009. The next prime is 20110111001063. The reversal of 20110111001027 is 72010011101102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20110111001027 - 2¹² = 20110110996931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110111000996 and 20110111001014.

It is not a weakly prime, because it can be changed into another prime (20110111001077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055055500513 + 10055055500514.

It is an arithmetic number, because the mean of its divisors is an integer number (10055055500514).

Almost surely, 2^{20110111001027} is an apocalyptic number.

20110111001027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110111001027 is an equidigital number, since it uses as much as digits as its factorization.

20110111001027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 20110111001027 its reverse (72010011101102), we get a palindrome (92120122102129).

The spelling of 20110111001027 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, one thousand, twenty-seven".