102143221 has 8 divisors (see below), whose sum is σ = 107748000. Its totient is φ = 96561360.

The previous prime is 102143159. The next prime is 102143257. The reversal of 102143221 is 122341201.

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 102143221 - 2¹¹ = 102141173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102143195 and 102143204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102143291) 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, 3855 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (13468500).

Almost surely, 2^102143221 is an apocalyptic number.

It is an amenable number.

102143221 is a deficient number, since it is larger than the sum of its proper divisors (5604779).

102143221 is a wasteful number, since it uses less digits than its factorization.

102143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11459.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102143221 is about 10106.5929471806. The cubic root of 102143221 is about 467.4514553958.

Adding to 102143221 its reverse (122341201), we get a palindrome (224484422).

The spelling of 102143221 in words is "one hundred two million, one hundred forty-three thousand, two hundred twenty-one".