2012220012221 has 8 divisors (see below), whose sum is σ = 2026545079104. Its totient is φ = 1997945297920.

The previous prime is 2012220012167. The next prime is 2012220012233. The reversal of 2012220012221 is 1222100222102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012220012221 - 2⁶ = 2012220012157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2012220012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012220042221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12507935 + ... + 12667788.

It is an arithmetic number, because the mean of its divisors is an integer number (253318134888).

Almost surely, 2^{2012220012221} is an apocalyptic number.

It is an amenable number.

2012220012221 is a deficient number, since it is larger than the sum of its proper divisors (14325066883).

2012220012221 is a wasteful number, since it uses less digits than its factorization.

2012220012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25176291.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2012220012221 its reverse (1222100222102), we get a palindrome (3234320234323).

The spelling of 2012220012221 in words is "two trillion, twelve billion, two hundred twenty million, twelve thousand, two hundred twenty-one".