11220021212211 has 24 divisors (see below), whose sum is σ = 19336090980240. Its totient is φ = 6411440691936.

The previous prime is 11220021212159. The next prime is 11220021212269. The reversal of 11220021212211 is 11221212002211.

11220021212211 is a `hidden beast` number, since 1 + 1 + 220 + 0 + 21 + 212 + 211 = 666.

It is not a de Polignac number, because 11220021212211 - 2¹¹ = 11220021210163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11220021212011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4240369506 + ... + 4240372151.

It is an arithmetic number, because the mean of its divisors is an integer number (805670457510).

Almost surely, 2^{11220021212211} is an apocalyptic number.

11220021212211 is a deficient number, since it is larger than the sum of its proper divisors (8116069768029).

11220021212211 is an equidigital number, since it uses as much as digits as its factorization.

11220021212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480741680 (or 8480741667 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11220021212211 its reverse (11221212002211), we get a palindrome (22441233214422).

The spelling of 11220021212211 in words is "eleven trillion, two hundred twenty billion, twenty-one million, two hundred twelve thousand, two hundred eleven".