20122011211 has 4 divisors (see below), whose sum is σ = 20151473112. Its totient is φ = 20092549312.

The previous prime is 20122011149. The next prime is 20122011229. The reversal of 20122011211 is 11211022102.

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 20122011211 - 2⁷ = 20122011083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122011191 and 20122011200.

It is not an unprimeable number, because it can be changed into a prime (20122011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14729926 + ... + 14731291.

It is an arithmetic number, because the mean of its divisors is an integer number (5037868278).

Almost surely, 2^20122011211 is an apocalyptic number.

20122011211 is a deficient number, since it is larger than the sum of its proper divisors (29461901).

20122011211 is an equidigital number, since it uses as much as digits as its factorization.

20122011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29461900.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20122011211 its reverse (11211022102), we get a palindrome (31333033313).

The spelling of 20122011211 in words is "twenty billion, one hundred twenty-two million, eleven thousand, two hundred eleven".