2011330543221 has 32 divisors (see below), whose sum is σ = 2988549244800. Its totient is φ = 1336930531200.

The previous prime is 2011330543207. The next prime is 2011330543247. The reversal of 2011330543221 is 1223450331102.

2011330543221 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 330 + 5 + 4 + 322 + 1 = 666.

It is not a de Polignac number, because 2011330543221 - 2¹³ = 2011330535029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011330548221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20325355 + ... + 20424071.

It is an arithmetic number, because the mean of its divisors is an integer number (93392163900).

Almost surely, 2^{2011330543221} is an apocalyptic number.

It is an amenable number.

2011330543221 is a deficient number, since it is larger than the sum of its proper divisors (977218701579).

2011330543221 is a wasteful number, since it uses less digits than its factorization.

2011330543221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100946 (or 100940 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 2011330543221 its reverse (1223450331102), we get a palindrome (3234780874323).

The spelling of 2011330543221 in words is "two trillion, eleven billion, three hundred thirty million, five hundred forty-three thousand, two hundred twenty-one".