2143672221 has 8 divisors (see below), whose sum is σ = 2860238304. Its totient is φ = 1428110480.

The previous prime is 2143672213. The next prime is 2143672231. The reversal of 2143672221 is 1222763412.

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 2143672221 - 2³ = 2143672213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143672211) 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, 246090 + ... + 254651.

It is an arithmetic number, because the mean of its divisors is an integer number (357529788).

Almost surely, 2^2143672221 is an apocalyptic number.

It is an amenable number.

2143672221 is a deficient number, since it is larger than the sum of its proper divisors (716566083).

2143672221 is a wasteful number, since it uses less digits than its factorization.

2143672221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502171.

The product of its digits is 8064, while the sum is 30.

The square root of 2143672221 is about 46299.8080017617. The cubic root of 2143672221 is about 1289.3954303064.

The spelling of 2143672221 in words is "two billion, one hundred forty-three million, six hundred seventy-two thousand, two hundred twenty-one".