2143224221 has 8 divisors (see below), whose sum is σ = 2273454720. Its totient is φ = 2013455808.

The previous prime is 2143224211. The next prime is 2143224241. The reversal of 2143224221 is 1224223412.

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 2143224221 - 2¹⁴ = 2143207837 is a prime.

It is a super-2 number, since 2×2143224221² = 9186820122962113682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143224211) 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, 105941 + ... + 124538.

It is an arithmetic number, because the mean of its divisors is an integer number (284181840).

Almost surely, 2^2143224221 is an apocalyptic number.

It is an amenable number.

2143224221 is a deficient number, since it is larger than the sum of its proper divisors (130230499).

2143224221 is a wasteful number, since it uses less digits than its factorization.

2143224221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231043.

The product of its digits is 1536, while the sum is 23.

The square root of 2143224221 is about 46294.9697159421. The cubic root of 2143224221 is about 1289.3056016792.

Adding to 2143224221 its reverse (1224223412), we get a palindrome (3367447633).

The spelling of 2143224221 in words is "two billion, one hundred forty-three million, two hundred twenty-four thousand, two hundred twenty-one".