2011221022011 has 4 divisors (see below), whose sum is σ = 2681628029352. Its totient is φ = 1340814014672.

The previous prime is 2011221021991. The next prime is 2011221022021. The reversal of 2011221022011 is 1102201221102.

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 2011221022011 - 2¹⁰ = 2011221020987 is a prime.

It is a super-3 number, since 3×2011221022011³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011221022021) 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, 335203503666 + ... + 335203503671.

It is an arithmetic number, because the mean of its divisors is an integer number (670407007338).

Almost surely, 2^{2011221022011} is an apocalyptic number.

2011221022011 is a deficient number, since it is larger than the sum of its proper divisors (670407007341).

2011221022011 is an equidigital number, since it uses as much as digits as its factorization.

2011221022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670407007340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2011221022011 its reverse (1102201221102), we get a palindrome (3113422243113).

The spelling of 2011221022011 in words is "two trillion, eleven billion, two hundred twenty-one million, twenty-two thousand, eleven".