20002102102 has 4 divisors (see below), whose sum is σ = 30003153156. Its totient is φ = 10001051050.

The previous prime is 20002102067. The next prime is 20002102121. The reversal of 20002102102 is 20120120002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5000525524 + ... + 5000525527.

It is an arithmetic number, because the mean of its divisors is an integer number (7500788289).

Almost surely, 2^20002102102 is an apocalyptic number.

20002102102 is a deficient number, since it is larger than the sum of its proper divisors (10001051054).

20002102102 is a wasteful number, since it uses less digits than its factorization.

20002102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001051053.

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

Adding to 20002102102 its reverse (20120120002), we get a palindrome (40122222104).

The spelling of 20002102102 in words is "twenty billion, two million, one hundred two thousand, one hundred two".