20022111211 has 4 divisors (see below), whose sum is σ = 20022615000. Its totient is φ = 20021607424.

The previous prime is 20022111181. The next prime is 20022111223. The reversal of 20022111211 is 11211122002.

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 20022111211 - 2³³ = 11432176619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022111191 and 20022111200.

It is not an unprimeable number, because it can be changed into a prime (20022112211) 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, 186646 + ... + 273643.

It is an arithmetic number, because the mean of its divisors is an integer number (5005653750).

Almost surely, 2^20022111211 is an apocalyptic number.

20022111211 is a deficient number, since it is larger than the sum of its proper divisors (503789).

20022111211 is an equidigital number, since it uses as much as digits as its factorization.

20022111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503788.

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

Adding to 20022111211 its reverse (11211122002), we get a palindrome (31233233213).

The spelling of 20022111211 in words is "twenty billion, twenty-two million, one hundred eleven thousand, two hundred eleven".