2012444321 has 4 divisors (see below), whose sum is σ = 2015981700. Its totient is φ = 2008906944.

The previous prime is 2012444281. The next prime is 2012444381. The reversal of 2012444321 is 1234442102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1234442102 = 2 ⋅617221051.

It can be written as a sum of positive squares in 2 ways, for example, as 854743696 + 1157700625 = 29236^2 + 34025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012444321 - 2⁶ = 2012444257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012444381) 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, 1767836 + ... + 1768973.

It is an arithmetic number, because the mean of its divisors is an integer number (503995425).

Almost surely, 2^2012444321 is an apocalyptic number.

It is an amenable number.

2012444321 is a deficient number, since it is larger than the sum of its proper divisors (3537379).

2012444321 is an equidigital number, since it uses as much as digits as its factorization.

2012444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537378.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2012444321 is about 44860.2755341516. The cubic root of 2012444321 is about 1262.5287924159.

Adding to 2012444321 its reverse (1234442102), we get a palindrome (3246886423).

The spelling of 2012444321 in words is "two billion, twelve million, four hundred forty-four thousand, three hundred twenty-one".