2012222321 has 4 divisors (see below), whose sum is σ = 2099710272. Its totient is φ = 1924734372.

The previous prime is 2012222279. The next prime is 2012222347. The reversal of 2012222321 is 1232222102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2012222321 - 2⁶ = 2012222257 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 2012222321.

It is not an unprimeable number, because it can be changed into a prime (2012222621) 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, 43743941 + ... + 43743986.

It is an arithmetic number, because the mean of its divisors is an integer number (524927568).

Almost surely, 2^2012222321 is an apocalyptic number.

It is an amenable number.

2012222321 is a deficient number, since it is larger than the sum of its proper divisors (87487951).

2012222321 is an equidigital number, since it uses as much as digits as its factorization.

2012222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87487950.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2012222321 is about 44857.8011164168. The cubic root of 2012222321 is about 1262.4823660054.

Adding to 2012222321 its reverse (1232222102), we get a palindrome (3244444423).

The spelling of 2012222321 in words is "two billion, twelve million, two hundred twenty-two thousand, three hundred twenty-one".