20120203103 has 64 divisors (see below), whose sum is σ = 29590686720. Its totient is φ = 13150771200.

The previous prime is 20120203091. The next prime is 20120203109. The reversal of 20120203103 is 30130202102.

It is a happy number.

It is not a de Polignac number, because 20120203103 - 2²⁸ = 19851767647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120203109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 473108 + ... + 513878.

It is an arithmetic number, because the mean of its divisors is an integer number (462354480).

Almost surely, 2^20120203103 is an apocalyptic number.

20120203103 is a deficient number, since it is larger than the sum of its proper divisors (9470483617).

20120203103 is a wasteful number, since it uses less digits than its factorization.

20120203103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40848.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20120203103 its reverse (30130202102), we get a palindrome (50250405205).

The spelling of 20120203103 in words is "twenty billion, one hundred twenty million, two hundred three thousand, one hundred three".