20112211320211 has 4 divisors (see below), whose sum is σ = 20491687005552. Its totient is φ = 19732735634872.

The previous prime is 20112211320163. The next prime is 20112211320217. The reversal of 20112211320211 is 11202311221102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20112211320211 - 2¹³ = 20112211312019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112211320217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189737842591 + ... + 189737842696.

It is an arithmetic number, because the mean of its divisors is an integer number (5122921751388).

Almost surely, 2^{20112211320211} is an apocalyptic number.

20112211320211 is a deficient number, since it is larger than the sum of its proper divisors (379475685341).

20112211320211 is an equidigital number, since it uses as much as digits as its factorization.

20112211320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379475685340.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20112211320211 its reverse (11202311221102), we get a palindrome (31314522541313).

The spelling of 20112211320211 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, three hundred twenty thousand, two hundred eleven".