20202221103 has 4 divisors (see below), whose sum is σ = 26936294808. Its totient is φ = 13468147400.

The previous prime is 20202221071. The next prime is 20202221113. The reversal of 20202221103 is 30112220202.

It is a happy number.

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 20202221103 - 2⁵ = 20202221071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202221113) 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, 3367036848 + ... + 3367036853.

It is an arithmetic number, because the mean of its divisors is an integer number (6734073702).

Almost surely, 2^20202221103 is an apocalyptic number.

20202221103 is a deficient number, since it is larger than the sum of its proper divisors (6734073705).

20202221103 is an equidigital number, since it uses as much as digits as its factorization.

20202221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734073704.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20202221103 its reverse (30112220202), we get a palindrome (50314441305).

Subtracting 20202221103 from its reverse (30112220202), we obtain a palindrome (9909999099).

The spelling of 20202221103 in words is "twenty billion, two hundred two million, two hundred twenty-one thousand, one hundred three".