20101120212201 has 48 divisors (see below), whose sum is σ = 32613329971584. Its totient is φ = 10785509779968.

The previous prime is 20101120212197. The next prime is 20101120212203. The reversal of 20101120212201 is 10221202110102.

It is not a de Polignac number, because 20101120212201 - 2² = 20101120212197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20101120212203) 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 47 ways as a sum of consecutive naturals, for example, 10875706 + ... + 12589011.

It is an arithmetic number, because the mean of its divisors is an integer number (679444374408).

Almost surely, 2^{20101120212201} is an apocalyptic number.

20101120212201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20101120212201 is a deficient number, since it is larger than the sum of its proper divisors (12512209759383).

20101120212201 is a wasteful number, since it uses less digits than its factorization.

20101120212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23464878 (or 23464859 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20101120212201 its reverse (10221202110102), we get a palindrome (30322322322303).

The spelling of 20101120212201 in words is "twenty trillion, one hundred one billion, one hundred twenty million, two hundred twelve thousand, two hundred one".