20101211200001 has 4 divisors (see below), whose sum is σ = 20568681227952. Its totient is φ = 19633741172052.

The previous prime is 20101211199989. The next prime is 20101211200079. The reversal of 20101211200001 is 10000211210102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20101211200001 - 2²⁶ = 20101144091137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20101211200601) 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 3 ways as a sum of consecutive naturals, for example, 233735013911 + ... + 233735013996.

It is an arithmetic number, because the mean of its divisors is an integer number (5142170306988).

Almost surely, 2^{20101211200001} is an apocalyptic number.

It is an amenable number.

20101211200001 is a deficient number, since it is larger than the sum of its proper divisors (467470027951).

20101211200001 is an equidigital number, since it uses as much as digits as its factorization.

20101211200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467470027950.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101211200001 its reverse (10000211210102), we get a palindrome (30101422410103).

The spelling of 20101211200001 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred thousand, one".