11021221020211 has 4 divisors (see below), whose sum is σ = 11022175167424. Its totient is φ = 11020266873000.

The previous prime is 11021221020203. The next prime is 11021221020323. The reversal of 11021221020211 is 11202012212011.

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 11021221020211 - 2³ = 11021221020203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021221024211) 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, 477056280 + ... + 477079381.

It is an arithmetic number, because the mean of its divisors is an integer number (2755543791856).

Almost surely, 2^{11021221020211} is an apocalyptic number.

11021221020211 is a deficient number, since it is larger than the sum of its proper divisors (954147213).

11021221020211 is an equidigital number, since it uses as much as digits as its factorization.

11021221020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954147212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11021221020211 its reverse (11202012212011), we get a palindrome (22223233232222).

The spelling of 11021221020211 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, twenty thousand, two hundred eleven".