102021002 has 8 divisors (see below), whose sum is σ = 153142596. Its totient is φ = 50973472.

The previous prime is 102021001. The next prime is 102021037. The reversal of 102021002 is 200120201.

It can be written as a sum of positive squares in 2 ways, for example, as 101828281 + 192721 = 10091^2 + 439^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14933 + ... + 20664.

Almost surely, 2^102021002 is an apocalyptic number.

102021002 is a deficient number, since it is larger than the sum of its proper divisors (51121594).

102021002 is a wasteful number, since it uses less digits than its factorization.

102021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37032.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 102021002 is about 10100.5446387806. The cubic root of 102021002 is about 467.2649386897.

Adding to 102021002 its reverse (200120201), we get a palindrome (302141203).

It can be divided in two parts, 1020 and 21002, that added together give a palindrome (22022).

The spelling of 102021002 in words is "one hundred two million, twenty-one thousand, two".