102130221 has 8 divisors (see below), whose sum is σ = 139495104. Its totient is φ = 66426080.

The previous prime is 102130219. The next prime is 102130229. The reversal of 102130221 is 122031201.

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 102130221 - 2¹ = 102130219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102130197 and 102130206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102130229) 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, 415041 + ... + 415286.

It is an arithmetic number, because the mean of its divisors is an integer number (17436888).

Almost surely, 2^102130221 is an apocalyptic number.

It is an amenable number.

102130221 is a deficient number, since it is larger than the sum of its proper divisors (37364883).

102130221 is an equidigital number, since it uses as much as digits as its factorization.

102130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830371.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102130221 is about 10105.9497821828. The cubic root of 102130221 is about 467.4316233511.

Adding to 102130221 its reverse (122031201), we get a palindrome (224161422).

The spelling of 102130221 in words is "one hundred two million, one hundred thirty thousand, two hundred twenty-one".