20003022521443 has 4 divisors (see below), whose sum is σ = 21541716561568. Its totient is φ = 18464328481320.

The previous prime is 20003022521389. The next prime is 20003022521539. The reversal of 20003022521443 is 34412522030002.

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 20003022521443 - 2⁹ = 20003022520931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003022521143) 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, 769347020043 + ... + 769347020068.

It is an arithmetic number, because the mean of its divisors is an integer number (5385429140392).

Almost surely, 2^{20003022521443} is an apocalyptic number.

20003022521443 is a deficient number, since it is larger than the sum of its proper divisors (1538694040125).

20003022521443 is a wasteful number, since it uses less digits than its factorization.

20003022521443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538694040124.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20003022521443 its reverse (34412522030002), we get a palindrome (54415544551445).

The spelling of 20003022521443 in words is "twenty trillion, three billion, twenty-two million, five hundred twenty-one thousand, four hundred forty-three".