20213022211 has 4 divisors (see below), whose sum is σ = 20215578112. Its totient is φ = 20210466312.

The previous prime is 20213022199. The next prime is 20213022227. The reversal of 20213022211 is 11222031202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213022211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213028211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266051 + ... + 1281916.

It is an arithmetic number, because the mean of its divisors is an integer number (5053894528).

Almost surely, 2^20213022211 is an apocalyptic number.

20213022211 is a deficient number, since it is larger than the sum of its proper divisors (2555901).

20213022211 is an equidigital number, since it uses as much as digits as its factorization.

20213022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555900.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20213022211 its reverse (11222031202), we get a palindrome (31435053413).

The spelling of 20213022211 in words is "twenty billion, two hundred thirteen million, twenty-two thousand, two hundred eleven".