11211220002211 has 4 divisors (see below), whose sum is σ = 11211352044424. Its totient is φ = 11211087960000.

The previous prime is 11211220002149. The next prime is 11211220002289. The reversal of 11211220002211 is 11220002211211.

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 11211220002211 - 2¹³ = 11211219994019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211220008211) 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, 65893665 + ... + 66063586.

It is an arithmetic number, because the mean of its divisors is an integer number (2802838011106).

Almost surely, 2^{11211220002211} is an apocalyptic number.

11211220002211 is a deficient number, since it is larger than the sum of its proper divisors (132042213).

11211220002211 is an equidigital number, since it uses as much as digits as its factorization.

11211220002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132042212.

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

Adding to 11211220002211 its reverse (11220002211211), we get a palindrome (22431222213422).

The spelling of 11211220002211 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, two thousand, two hundred eleven".