2011333331221 has 16 divisors (see below), whose sum is σ = 2075415914880. Its totient is φ = 1948471692480.

The previous prime is 2011333331219. The next prime is 2011333331237. The reversal of 2011333331221 is 1221333331102.

It is a cyclic number.

It is not a de Polignac number, because 2011333331221 - 2¹ = 2011333331219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011333331521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204690 + ... + 2016076.

It is an arithmetic number, because the mean of its divisors is an integer number (129713494680).

Almost surely, 2^{2011333331221} is an apocalyptic number.

It is an amenable number.

2011333331221 is a deficient number, since it is larger than the sum of its proper divisors (64082583659).

2011333331221 is a wasteful number, since it uses less digits than its factorization.

2011333331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811724.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2011333331221 its reverse (1221333331102), we get a palindrome (3232666662323).

The spelling of 2011333331221 in words is "two trillion, eleven billion, three hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty-one".