20021100021196 has 6 divisors (see below), whose sum is σ = 35036925037100. Its totient is φ = 10010550010596.

The previous prime is 20021100021193. The next prime is 20021100021203. The reversal of 20021100021196 is 69112000112002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20021100021196.

It is not an unprimeable number, because it can be changed into a prime (20021100021193) by changing a digit.

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, 2502637502646 + ... + 2502637502653.

Almost surely, 2^{20021100021196} is an apocalyptic number.

It is an amenable number.

20021100021196 is a deficient number, since it is larger than the sum of its proper divisors (15015825015904).

20021100021196 is a wasteful number, since it uses less digits than its factorization.

20021100021196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005275005303 (or 5005275005301 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 20021100021196 its reverse (69112000112002), we get a palindrome (89133100133198).

The spelling of 20021100021196 in words is "twenty trillion, twenty-one billion, one hundred million, twenty-one thousand, one hundred ninety-six".