11212111002211 has 4 divisors (see below), whose sum is σ = 12813841145392. Its totient is φ = 9610380859032.

The previous prime is 11212111002203. The next prime is 11212111002269. The reversal of 11212111002211 is 11220011121211.

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 11212111002211 - 2³ = 11212111002203 is a prime.

It is a super-2 number, since 2×11212111002211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212111402211) 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, 800865071580 + ... + 800865071593.

It is an arithmetic number, because the mean of its divisors is an integer number (3203460286348).

Almost surely, 2^{11212111002211} is an apocalyptic number.

11212111002211 is a deficient number, since it is larger than the sum of its proper divisors (1601730143181).

11212111002211 is an equidigital number, since it uses as much as digits as its factorization.

11212111002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601730143180.

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

Adding to 11212111002211 its reverse (11220011121211), we get a palindrome (22432122123422).

The spelling of 11212111002211 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, two thousand, two hundred eleven".