11220202021211 has 4 divisors (see below), whose sum is σ = 11225888896992. Its totient is φ = 11214515145432.

The previous prime is 11220202021199. The next prime is 11220202021219. The reversal of 11220202021211 is 11212020202211.

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 11220202021211 - 2³⁴ = 11203022152027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11220202021211.

It is not an unprimeable number, because it can be changed into a prime (11220202021219) 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, 2843434931 + ... + 2843438876.

It is an arithmetic number, because the mean of its divisors is an integer number (2806472224248).

Almost surely, 2^{11220202021211} is an apocalyptic number.

11220202021211 is a deficient number, since it is larger than the sum of its proper divisors (5686875781).

11220202021211 is an equidigital number, since it uses as much as digits as its factorization.

11220202021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686875780.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11220202021211 its reverse (11212020202211), we get a palindrome (22432222223422).

The spelling of 11220202021211 in words is "eleven trillion, two hundred twenty billion, two hundred two million, twenty-one thousand, two hundred eleven".