10221143 has 4 divisors (see below), whose sum is σ = 10458888. Its totient is φ = 9983400.

The previous prime is 10221091. The next prime is 10221149. The reversal of 10221143 is 34112201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10221143 - 2¹² = 10217047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118808 + ... + 118893.

It is an arithmetic number, because the mean of its divisors is an integer number (2614722).

Almost surely, 2^10221143 is an apocalyptic number.

10221143 is a deficient number, since it is larger than the sum of its proper divisors (237745).

10221143 is an equidigital number, since it uses as much as digits as its factorization.

10221143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237744.

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

The square root of 10221143 is about 3197.0522360449. The cubic root of 10221143 is about 217.0200311381.

Adding to 10221143 its reverse (34112201), we get a palindrome (44333344).

The spelling of 10221143 in words is "ten million, two hundred twenty-one thousand, one hundred forty-three".