20102020103 has 8 divisors (see below), whose sum is σ = 22685665680. Its totient is φ = 17644406080.

The previous prime is 20102020097. The next prime is 20102020139. The reversal of 20102020103 is 30102020102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20102020103 - 2⁴ = 20102020087 is a prime.

It is a super-2 number, since 2×20102020103² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102020193) 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 7 ways as a sum of consecutive naturals, for example, 31507550 + ... + 31508187.

It is an arithmetic number, because the mean of its divisors is an integer number (2835708210).

Almost surely, 2^20102020103 is an apocalyptic number.

20102020103 is a deficient number, since it is larger than the sum of its proper divisors (2583645577).

20102020103 is a wasteful number, since it uses less digits than its factorization.

20102020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63015777.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20102020103 its reverse (30102020102), we get a palindrome (50204040205).

Subtracting 20102020103 from its reverse (30102020102), we obtain a palindrome (9999999999).

The spelling of 20102020103 in words is "twenty billion, one hundred two million, twenty thousand, one hundred three".