11021022211 has 4 divisors (see below), whose sum is σ = 11171995192. Its totient is φ = 10870049232.

The previous prime is 11021022193. The next prime is 11021022239. The reversal of 11021022211 is 11222012011.

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

It is not a de Polignac number, because 11021022211 - 2⁷ = 11021022083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021022191 and 11021022200.

It is not an unprimeable number, because it can be changed into a prime (11021022811) 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, 75486381 + ... + 75486526.

It is an arithmetic number, because the mean of its divisors is an integer number (2792998798).

Almost surely, 2^11021022211 is an apocalyptic number.

11021022211 is a deficient number, since it is larger than the sum of its proper divisors (150972981).

11021022211 is an equidigital number, since it uses as much as digits as its factorization.

11021022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150972980.

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

Adding to 11021022211 its reverse (11222012011), we get a palindrome (22243034222).

The spelling of 11021022211 in words is "eleven billion, twenty-one million, twenty-two thousand, two hundred eleven".