20002112100202 has 4 divisors (see below), whose sum is σ = 30003168150306. Its totient is φ = 10001056050100.

The previous prime is 20002112100181. The next prime is 20002112100203. The reversal of 20002112100202 is 20200121120002.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 16365657611601 + 3636454488601 = 4045449^2 + 1906949^2 .

It is not an unprimeable number, because it can be changed into a prime (20002112100203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000528025049 + ... + 5000528025052.

Almost surely, 2^{20002112100202} is an apocalyptic number.

20002112100202 is a deficient number, since it is larger than the sum of its proper divisors (10001056050104).

20002112100202 is a wasteful number, since it uses less digits than its factorization.

20002112100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001056050103.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002112100202 its reverse (20200121120002), we get a palindrome (40202233220204).

The spelling of 20002112100202 in words is "twenty trillion, two billion, one hundred twelve million, one hundred thousand, two hundred two".