102021000002 has 8 divisors (see below), whose sum is σ = 154058557500. Its totient is φ = 50668147504.

The previous prime is 102020999953. The next prime is 102021000013. The reversal of 102021000002 is 200000120201.

It can be written as a sum of positive squares in 2 ways, for example, as 77412489361 + 24608510641 = 278231^2 + 156871^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171175877 + ... + 171176472.

Almost surely, 2^102021000002 is an apocalyptic number.

102021000002 is a deficient number, since it is larger than the sum of its proper divisors (52037557498).

102021000002 is a wasteful number, since it uses less digits than its factorization.

102021000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342352500.

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

Adding to 102021000002 its reverse (200000120201), we get a palindrome (302021120203).

The spelling of 102021000002 in words is "one hundred two billion, twenty-one million, two", and thus it is an aban number.