20110212101101 has 2 divisors, whose sum is σ = 20110212101102. Its totient is φ = 20110212101100.

The previous prime is 20110212101047. The next prime is 20110212101137. The reversal of 20110212101101 is 10110121201102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18329658129225 + 1780553971876 = 4281315^2 + 1334374^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110212101101 - 2¹³ = 20110212092909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110212101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055106050550 + 10055106050551.

It is an arithmetic number, because the mean of its divisors is an integer number (10055106050551).

Almost surely, 2^{20110212101101} is an apocalyptic number.

It is an amenable number.

20110212101101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110212101101 is an equidigital number, since it uses as much as digits as its factorization.

20110212101101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20110212101101 its reverse (10110121201102), we get a palindrome (30220333302203).

The spelling of 20110212101101 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred one thousand, one hundred one".