20002100102002 has 32 divisors (see below), whose sum is σ = 31371057487872. Its totient is φ = 9546862170384.

The previous prime is 20002100101987. The next prime is 20002100102069. The reversal of 20002100102002 is 20020100120002.

It is a self number, because there is not a number n which added to its sum of digits gives 20002100102002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45131293 + ... + 45572335.

It is an arithmetic number, because the mean of its divisors is an integer number (980345546496).

Almost surely, 2^{20002100102002} is an apocalyptic number.

20002100102002 is a deficient number, since it is larger than the sum of its proper divisors (11368957385870).

20002100102002 is a wasteful number, since it uses less digits than its factorization.

20002100102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443062.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20002100102002 its reverse (20020100120002), we get a palindrome (40022200222004).

The spelling of 20002100102002 in words is "twenty trillion, two billion, one hundred million, one hundred two thousand, two".