2011221022211 has 8 divisors (see below), whose sum is σ = 2039151276864. Its totient is φ = 1983301018560.

The previous prime is 2011221022147. The next prime is 2011221022229. The reversal of 2011221022211 is 1122201221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011221022211 - 2⁶ = 2011221022147 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 2011221022211.

It is not an unprimeable number, because it can be changed into a prime (2011221022231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167211 + ... + 2952836.

It is an arithmetic number, because the mean of its divisors is an integer number (254893909608).

Almost surely, 2^{2011221022211} is an apocalyptic number.

2011221022211 is a deficient number, since it is larger than the sum of its proper divisors (27930254653).

2011221022211 is an equidigital number, since it uses as much as digits as its factorization.

2011221022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125501.

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

Adding to 2011221022211 its reverse (1122201221102), we get a palindrome (3133422243313).

The spelling of 2011221022211 in words is "two trillion, eleven billion, two hundred twenty-one million, twenty-two thousand, two hundred eleven".