2012211020101 has 4 divisors (see below), whose sum is σ = 2012231349100. Its totient is φ = 2012190691104.

The previous prime is 2012211020081. The next prime is 2012211020119. The reversal of 2012211020101 is 1010201122102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 455827522500 + 1556383497601 = 675150^2 + 1247551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012211020101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012211020191) 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, 10015296 + ... + 10214233.

It is an arithmetic number, because the mean of its divisors is an integer number (503057837275).

Almost surely, 2^{2012211020101} is an apocalyptic number.

It is an amenable number.

2012211020101 is a deficient number, since it is larger than the sum of its proper divisors (20328999).

2012211020101 is an equidigital number, since it uses as much as digits as its factorization.

2012211020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20328998.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012211020101 its reverse (1010201122102), we get a palindrome (3022412142203).

The spelling of 2012211020101 in words is "two trillion, twelve billion, two hundred eleven million, twenty thousand, one hundred one".