2012221021111 has 4 divisors (see below), whose sum is σ = 2299681166992. Its totient is φ = 1724760875232.

The previous prime is 2012221021103. The next prime is 2012221021141. The reversal of 2012221021111 is 1111201222102.

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 2012221021111 - 2³ = 2012221021103 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 (2012221021141) 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, 143730072930 + ... + 143730072943.

It is an arithmetic number, because the mean of its divisors is an integer number (574920291748).

Almost surely, 2^{2012221021111} is an apocalyptic number.

2012221021111 is a deficient number, since it is larger than the sum of its proper divisors (287460145881).

2012221021111 is an equidigital number, since it uses as much as digits as its factorization.

2012221021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287460145880.

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

Adding to 2012221021111 its reverse (1111201222102), we get a palindrome (3123422243213).

It can be divided in two parts, 201222102 and 1111, that multiplied together give a palindrome (223557755322).

The spelling of 2012221021111 in words is "two trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred eleven".