20021433103 has 16 divisors (see below), whose sum is σ = 25502757120. Its totient is φ = 15301650816.

The previous prime is 20021433101. The next prime is 20021433143. The reversal of 20021433103 is 30133412002.

It is a cyclic number.

It is not a de Polignac number, because 20021433103 - 2¹ = 20021433101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021433101) 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 15 ways as a sum of consecutive naturals, for example, 4425301 + ... + 4429822.

It is an arithmetic number, because the mean of its divisors is an integer number (1593922320).

Almost surely, 2^20021433103 is an apocalyptic number.

20021433103 is a deficient number, since it is larger than the sum of its proper divisors (5481324017).

20021433103 is a wasteful number, since it uses less digits than its factorization.

20021433103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855166.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20021433103 its reverse (30133412002), we get a palindrome (50154845105).

The spelling of 20021433103 in words is "twenty billion, twenty-one million, four hundred thirty-three thousand, one hundred three".