2211323643 has 12 divisors (see below), whose sum is σ = 3272040408. Its totient is φ = 1438259040.

The previous prime is 2211323641. The next prime is 2211323659. The reversal of 2211323643 is 3463231122.

2211323643 is a `hidden beast` number, since 2 + 2 + 1 + 13 + 2 + 3 + 643 = 666.

It is not a de Polignac number, because 2211323643 - 2¹ = 2211323641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211323641) 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 11 ways as a sum of consecutive naturals, for example, 2996005 + ... + 2996742.

It is an arithmetic number, because the mean of its divisors is an integer number (272670034).

Almost surely, 2^2211323643 is an apocalyptic number.

2211323643 is a deficient number, since it is larger than the sum of its proper divisors (1060716765).

2211323643 is a wasteful number, since it uses less digits than its factorization.

2211323643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992794 (or 5992791 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 2211323643 is about 47024.7131091727. The cubic root of 2211323643 is about 1302.8190585682.

Adding to 2211323643 its reverse (3463231122), we get a palindrome (5674554765).

The spelling of 2211323643 in words is "two billion, two hundred eleven million, three hundred twenty-three thousand, six hundred forty-three".