2011143221 has 8 divisors (see below), whose sum is σ = 2074626144. Its totient is φ = 1948644720.

The previous prime is 2011143187. The next prime is 2011143229. The reversal of 2011143221 is 1223411102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011143221 - 2¹⁴ = 2011126837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011143221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011143229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241955 + ... + 250128.

It is an arithmetic number, because the mean of its divisors is an integer number (259328268).

Almost surely, 2^2011143221 is an apocalyptic number.

It is an amenable number.

2011143221 is a deficient number, since it is larger than the sum of its proper divisors (63482923).

2011143221 is an equidigital number, since it uses as much as digits as its factorization.

2011143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492211.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2011143221 is about 44845.7714952034. The cubic root of 2011143221 is about 1262.2566473544.

Adding to 2011143221 its reverse (1223411102), we get a palindrome (3234554323).

The spelling of 2011143221 in words is "two billion, eleven million, one hundred forty-three thousand, two hundred twenty-one".