20110121011196 has 6 divisors (see below), whose sum is σ = 35192711769600. Its totient is φ = 10055060505596.

The previous prime is 20110121011181. The next prime is 20110121011207. The reversal of 20110121011196 is 69111012101102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513765126396 + ... + 2513765126403.

It is an arithmetic number, because the mean of its divisors is an integer number (5865451961600).

Almost surely, 2^{20110121011196} is an apocalyptic number.

It is an amenable number.

20110121011196 is a deficient number, since it is larger than the sum of its proper divisors (15082590758404).

20110121011196 is a wasteful number, since it uses less digits than its factorization.

20110121011196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027530252803 (or 5027530252801 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 26.

Adding to 20110121011196 its reverse (69111012101102), we get a palindrome (89221133112298).

The spelling of 20110121011196 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, one hundred ninety-six".