201020100010103 has 4 divisors (see below), whose sum is σ = 219294654556488. Its totient is φ = 182745545463720.

The previous prime is 201020100010087. The next prime is 201020100010111. The reversal of 201020100010103 is 301010001020102.

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 201020100010103 - 2⁴ = 201020100010087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 18274554546373 = 201020100010103 / (2 + 0 + 1 + 0 + 2 + 0 + 1 + 0 + 0 + 0 + 1 + 0 + 1 + 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 (201020100010133) 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, 9137277273176 + ... + 9137277273197.

It is an arithmetic number, because the mean of its divisors is an integer number (54823663639122).

Almost surely, 2^{201020100010103} is an apocalyptic number.

201020100010103 is a deficient number, since it is larger than the sum of its proper divisors (18274554546385).

201020100010103 is a wasteful number, since it uses less digits than its factorization.

201020100010103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274554546384.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 201020100010103 its reverse (301010001020102), we get a palindrome (502030101030205).

The spelling of 201020100010103 in words is "two hundred one trillion, twenty billion, one hundred million, ten thousand, one hundred three".