102330021 has 16 divisors (see below), whose sum is σ = 145022400. Its totient is φ = 63959808.

The previous prime is 102329959. The next prime is 102330023. The reversal of 102330021 is 120033201.

It is a happy number.

It is not a de Polignac number, because 102330021 - 2¹⁰ = 102328997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102329979 and 102330006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102330023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9990 + ... + 17448.

It is an arithmetic number, because the mean of its divisors is an integer number (9063900).

Almost surely, 2^102330021 is an apocalyptic number.

It is an amenable number.

102330021 is a deficient number, since it is larger than the sum of its proper divisors (42692379).

102330021 is a wasteful number, since it uses less digits than its factorization.

102330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 102330021 is about 10115.8302180296. The cubic root of 102330021 is about 467.7362409960.

Adding to 102330021 its reverse (120033201), we get a palindrome (222363222).

The spelling of 102330021 in words is "one hundred two million, three hundred thirty thousand, twenty-one".