2012210121211 has 4 divisors (see below), whose sum is σ = 2012452827624. Its totient is φ = 2011967414800.

The previous prime is 2012210121209. The next prime is 2012210121217. The reversal of 2012210121211 is 1121210122102.

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 2012210121211 - 2¹ = 2012210121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012210121217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121340770 + ... + 121357351.

It is an arithmetic number, because the mean of its divisors is an integer number (503113206906).

Almost surely, 2^{2012210121211} is an apocalyptic number.

2012210121211 is a deficient number, since it is larger than the sum of its proper divisors (242706413).

2012210121211 is an equidigital number, since it uses as much as digits as its factorization.

2012210121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242706412.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2012210121211 its reverse (1121210122102), we get a palindrome (3133420243313).

The spelling of 2012210121211 in words is "two trillion, twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred eleven".