20112021196 has 12 divisors (see below), whose sum is σ = 35362844440. Its totient is φ = 10008351360.

The previous prime is 20112021161. The next prime is 20112021197. The reversal of 20112021196 is 69112021102.

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 20112021196.

It is not an unprimeable number, because it can be changed into a prime (20112021197) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11913861 + ... + 11915548.

Almost surely, 2^20112021196 is an apocalyptic number.

It is an amenable number.

20112021196 is a deficient number, since it is larger than the sum of its proper divisors (15250823244).

20112021196 is a wasteful number, since it uses less digits than its factorization.

20112021196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23829624 (or 23829622 counting only the distinct ones).

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

Adding to 20112021196 its reverse (69112021102), we get a palindrome (89224042298).

The spelling of 20112021196 in words is "twenty billion, one hundred twelve million, twenty-one thousand, one hundred ninety-six".