20120444213 has 2 divisors, whose sum is σ = 20120444214. Its totient is φ = 20120444212.

The previous prime is 20120444203. The next prime is 20120444237. The reversal of 20120444213 is 31244402102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19216058884 + 904385329 = 138622^2 + 30073^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120444213 - 2²⁶ = 20053335349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120444203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060222106 + 10060222107.

It is an arithmetic number, because the mean of its divisors is an integer number (10060222107).

Almost surely, 2^20120444213 is an apocalyptic number.

It is an amenable number.

20120444213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120444213 is an equidigital number, since it uses as much as digits as its factorization.

20120444213 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20120444213 its reverse (31244402102), we get a palindrome (51364846315).

The spelling of 20120444213 in words is "twenty billion, one hundred twenty million, four hundred forty-four thousand, two hundred thirteen".