10143221 has 8 divisors (see below), whose sum is σ = 11253600. Its totient is φ = 9064240.

The previous prime is 10143187. The next prime is 10143223. The reversal of 10143221 is 12234101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10143221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10143196 and 10143205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10143223) 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, 7166 + ... + 8463.

It is an arithmetic number, because the mean of its divisors is an integer number (1406700).

Almost surely, 2^10143221 is an apocalyptic number.

10143221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10143221 is a deficient number, since it is larger than the sum of its proper divisors (1110379).

10143221 is a wasteful number, since it uses less digits than its factorization.

10143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15699.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 10143221 is about 3184.8423822852. The cubic root of 10143221 is about 216.4671317490.

Adding to 10143221 its reverse (12234101), we get a palindrome (22377322).

The spelling of 10143221 in words is "ten million, one hundred forty-three thousand, two hundred twenty-one".