20001012012196 has 24 divisors (see below), whose sum is σ = 35785901644416. Its totient is φ = 9776937876960.

The previous prime is 20001012012181. The next prime is 20001012012199. The reversal of 20001012012196 is 69121021010002.

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 20001012012196.

It is not an unprimeable number, because it can be changed into a prime (20001012012199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58477975 + ... + 58819006.

It is an arithmetic number, because the mean of its divisors is an integer number (1491079235184).

Almost surely, 2^{20001012012196} is an apocalyptic number.

It is an amenable number.

20001012012196 is a deficient number, since it is larger than the sum of its proper divisors (15784889632220).

20001012012196 is a wasteful number, since it uses less digits than its factorization.

20001012012196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117297939 (or 117297937 counting only the distinct ones).

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

Adding to 20001012012196 its reverse (69121021010002), we get a palindrome (89122033022198).

The spelling of 20001012012196 in words is "twenty trillion, one billion, twelve million, twelve thousand, one hundred ninety-six".