20111001012196 has 24 divisors (see below), whose sum is σ = 38324049120000. Its totient is φ = 9197771786784.

The previous prime is 20111001012161. The next prime is 20111001012209. The reversal of 20111001012196 is 69121010011102.

It is a self number, because there is not a number n which added to its sum of digits gives 20111001012196.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4562384596 + ... + 4562389003.

It is an arithmetic number, because the mean of its divisors is an integer number (1596835380000).

Almost surely, 2^{20111001012196} is an apocalyptic number.

It is an amenable number.

20111001012196 is a deficient number, since it is larger than the sum of its proper divisors (18213048107804).

20111001012196 is a wasteful number, since it uses less digits than its factorization.

20111001012196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9124773651 (or 9124773649 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 25.

Adding to 20111001012196 its reverse (69121010011102), we get a palindrome (89232011023298).

The spelling of 20111001012196 in words is "twenty trillion, one hundred eleven billion, one million, twelve thousand, one hundred ninety-six".