2211143221 has 16 divisors (see below), whose sum is σ = 2668111360. Its totient is φ = 1790054640.

The previous prime is 2211143219. The next prime is 2211143237. The reversal of 2211143221 is 1223411122.

It is a cyclic number.

It is not a de Polignac number, because 2211143221 - 2¹ = 2211143219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211143021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18910 + ... + 69136.

It is an arithmetic number, because the mean of its divisors is an integer number (166756960).

Almost surely, 2^2211143221 is an apocalyptic number.

It is an amenable number.

2211143221 is a deficient number, since it is larger than the sum of its proper divisors (456968139).

2211143221 is a wasteful number, since it uses less digits than its factorization.

2211143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50584.

The product of its digits is 192, while the sum is 19.

The square root of 2211143221 is about 47022.7946957643. The cubic root of 2211143221 is about 1302.7836252485.

Adding to 2211143221 its reverse (1223411122), we get a palindrome (3434554343).

The spelling of 2211143221 in words is "two billion, two hundred eleven million, one hundred forty-three thousand, two hundred twenty-one".