20213202443 has 4 divisors (see below), whose sum is σ = 23100802800. Its totient is φ = 17325602088.

The previous prime is 20213202431. The next prime is 20213202461. The reversal of 20213202443 is 34420231202.

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

It is a cyclic number.

It is not a de Polignac number, because 20213202443 - 2¹⁰ = 20213201419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213202403) 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 in 3 ways as a sum of consecutive naturals, for example, 1443800168 + ... + 1443800181.

It is an arithmetic number, because the mean of its divisors is an integer number (5775200700).

Almost surely, 2^20213202443 is an apocalyptic number.

20213202443 is a deficient number, since it is larger than the sum of its proper divisors (2887600357).

20213202443 is an equidigital number, since it uses as much as digits as its factorization.

20213202443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887600356.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20213202443 its reverse (34420231202), we get a palindrome (54633433645).

The spelling of 20213202443 in words is "twenty billion, two hundred thirteen million, two hundred two thousand, four hundred forty-three".