20522403203 has 4 divisors (see below), whose sum is σ = 20803532088. Its totient is φ = 20241274320.

The previous prime is 20522403197. The next prime is 20522403229. The reversal of 20522403203 is 30230422502.

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 20522403203 - 2²² = 20518208899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522405203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140564333 + ... + 140564478.

It is an arithmetic number, because the mean of its divisors is an integer number (5200883022).

Almost surely, 2^20522403203 is an apocalyptic number.

20522403203 is a deficient number, since it is larger than the sum of its proper divisors (281128885).

20522403203 is an equidigital number, since it uses as much as digits as its factorization.

20522403203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281128884.

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20522403203 its reverse (30230422502), we get a palindrome (50752825705).

The spelling of 20522403203 in words is "twenty billion, five hundred twenty-two million, four hundred three thousand, two hundred three".