11220020211211 has 4 divisors (see below), whose sum is σ = 12822880241392. Its totient is φ = 9617160181032.

The previous prime is 11220020211193. The next prime is 11220020211217. The reversal of 11220020211211 is 11211202002211.

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 11220020211211 - 2⁷ = 11220020211083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220020211217) 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, 801430015080 + ... + 801430015093.

It is an arithmetic number, because the mean of its divisors is an integer number (3205720060348).

Almost surely, 2^{11220020211211} is an apocalyptic number.

11220020211211 is a deficient number, since it is larger than the sum of its proper divisors (1602860030181).

11220020211211 is an equidigital number, since it uses as much as digits as its factorization.

11220020211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602860030180.

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

Adding to 11220020211211 its reverse (11211202002211), we get a palindrome (22431222213422).

The spelling of 11220020211211 in words is "eleven trillion, two hundred twenty billion, twenty million, two hundred eleven thousand, two hundred eleven".