20111112120201 has 32 divisors (see below), whose sum is σ = 27579618823680. Its totient is φ = 13027677465600.

The previous prime is 20111112120199. The next prime is 20111112120221. The reversal of 20111112120201 is 10202121111102.

It is a happy number.

It is not a de Polignac number, because 20111112120201 - 2¹ = 20111112120199 is a prime.

It is a super-3 number, since 3×20111112120201³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20111112120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98864071 + ... + 99067283.

It is an arithmetic number, because the mean of its divisors is an integer number (861863088240).

Almost surely, 2^{20111112120201} is an apocalyptic number.

It is an amenable number.

20111112120201 is a deficient number, since it is larger than the sum of its proper divisors (7468506703479).

20111112120201 is a wasteful number, since it uses less digits than its factorization.

20111112120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206497.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111112120201 its reverse (10202121111102), we get a palindrome (30313233231303).

The spelling of 20111112120201 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty thousand, two hundred one".