2101200001211 has 4 divisors (see below), whose sum is σ = 2101203219024. Its totient is φ = 2101196783400.

The previous prime is 2101200001181. The next prime is 2101200001267. The reversal of 2101200001211 is 1121000021012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101200001211 - 2²² = 2101195806907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101200001192 and 2101200001201.

It is not an unprimeable number, because it can be changed into a prime (2101200001111) 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 3 ways as a sum of consecutive naturals, for example, 242735 + ... + 2064296.

It is an arithmetic number, because the mean of its divisors is an integer number (525300804756).

Almost surely, 2^{2101200001211} is an apocalyptic number.

2101200001211 is a deficient number, since it is larger than the sum of its proper divisors (3217813).

2101200001211 is an equidigital number, since it uses as much as digits as its factorization.

2101200001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217812.

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

Adding to 2101200001211 its reverse (1121000021012), we get a palindrome (3222200022223).

The spelling of 2101200001211 in words is "two trillion, one hundred one billion, two hundred million, one thousand, two hundred eleven".