20030021103 has 24 divisors (see below), whose sum is σ = 29095574016. Its totient is φ = 12242437200.

The previous prime is 20030021101. The next prime is 20030021117. The reversal of 20030021103 is 30112003002.

It is a happy number.

It is not a de Polignac number, because 20030021103 - 2¹ = 20030021101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030021101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264733 + ... + 331878.

It is an arithmetic number, because the mean of its divisors is an integer number (1212315584).

Almost surely, 2^20030021103 is an apocalyptic number.

20030021103 is a deficient number, since it is larger than the sum of its proper divisors (9065552913).

20030021103 is a wasteful number, since it uses less digits than its factorization.

20030021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596683 (or 596664 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20030021103 its reverse (30112003002), we get a palindrome (50142024105).

The spelling of 20030021103 in words is "twenty billion, thirty million, twenty-one thousand, one hundred three".