20010101123303 has 4 divisors (see below), whose sum is σ = 21187165895280. Its totient is φ = 18833036351328.

The previous prime is 20010101123291. The next prime is 20010101123333. The reversal of 20010101123303 is 30332110101002.

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 20010101123303 - 2⁶ = 20010101123239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1177064771959 = 20010101123303 / (2 + 0 + 0 + 1 + 0 + 1 + 0 + 1 + 1 + 2 + 3 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010101123333) 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, 588532385963 + ... + 588532385996.

It is an arithmetic number, because the mean of its divisors is an integer number (5296791473820).

Almost surely, 2^{20010101123303} is an apocalyptic number.

20010101123303 is a deficient number, since it is larger than the sum of its proper divisors (1177064771977).

20010101123303 is a wasteful number, since it uses less digits than its factorization.

20010101123303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177064771976.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20010101123303 its reverse (30332110101002), we get a palindrome (50342211224305).

The spelling of 20010101123303 in words is "twenty trillion, ten billion, one hundred one million, one hundred twenty-three thousand, three hundred three".