20012230445 has 4 divisors (see below), whose sum is σ = 24014676540. Its totient is φ = 16009784352.

The previous prime is 20012230393. The next prime is 20012230481. The reversal of 20012230445 is 54403221002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3346969609 + 16665260836 = 57853^2 + 129094^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012230445 - 2²² = 20008036141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012230445.

It is a congruent number.

It is an unprimeable number.

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, 2001223040 + ... + 2001223049.

It is an arithmetic number, because the mean of its divisors is an integer number (6003669135).

Almost surely, 2^20012230445 is an apocalyptic number.

It is an amenable number.

20012230445 is a deficient number, since it is larger than the sum of its proper divisors (4002446095).

20012230445 is an equidigital number, since it uses as much as digits as its factorization.

20012230445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002446094.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20012230445 its reverse (54403221002), we get a palindrome (74415451447).

The spelling of 20012230445 in words is "twenty billion, twelve million, two hundred thirty thousand, four hundred forty-five".