20010001020103 has 4 divisors (see below), whose sum is σ = 20010025953688. Its totient is φ = 20009976086520.

The previous prime is 20010001020101. The next prime is 20010001020109. The reversal of 20010001020103 is 30102010001002.

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 20010001020103 - 2¹ = 20010001020101 is a prime.

It is a super-2 number, since 2×20010001020103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20010001020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010001020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11221533 + ... + 12881878.

It is an arithmetic number, because the mean of its divisors is an integer number (5002506488422).

Almost surely, 2^{20010001020103} is an apocalyptic number.

20010001020103 is a deficient number, since it is larger than the sum of its proper divisors (24933585).

20010001020103 is an equidigital number, since it uses as much as digits as its factorization.

20010001020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24933584.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20010001020103 its reverse (30102010001002), we get a palindrome (50112011021105).

The spelling of 20010001020103 in words is "twenty trillion, ten billion, one million, twenty thousand, one hundred three".