20201002103 has 4 divisors (see below), whose sum is σ = 21264212760.
Its totient is φ = 19137791448.
The previous prime is 20201002057. The next prime is 20201002117. The reversal of 20201002103 is 30120010202.
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 20201002103 - 224 = 20184224887 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20201002163) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531605300 + ... + 531605337.
It is an arithmetic number, because the mean of its divisors is an integer number (5316053190).
Almost surely, 220201002103 is an apocalyptic number.
20201002103 is a deficient number, since it is larger than the sum of its proper divisors (1063210657).
20201002103 is a wasteful number, since it uses less digits than its factorization.
20201002103 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1063210656.
The product of its (nonzero) digits is 24, while the sum is 11.
Adding to 20201002103 its reverse (30120010202), we get a palindrome (50321012305).
The spelling of 20201002103 in words is "twenty billion, two hundred one million, two thousand, one hundred three".