20202112021103 has 4 divisors (see below), whose sum is σ = 20209334802600. Its totient is φ = 20194889239608.

The previous prime is 20202112021081. The next prime is 20202112021129. The reversal of 20202112021103 is 30112021120202.

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 20202112021103 - 2²⁸ = 20201843585647 is a prime.

It is a super-2 number, since 2×20202112021103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202112027103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3611386553 + ... + 3611392146.

It is an arithmetic number, because the mean of its divisors is an integer number (5052333700650).

Almost surely, 2^{20202112021103} is an apocalyptic number.

20202112021103 is a deficient number, since it is larger than the sum of its proper divisors (7222781497).

20202112021103 is an equidigital number, since it uses as much as digits as its factorization.

20202112021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222781496.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20202112021103 its reverse (30112021120202), we get a palindrome (50314133141305).

Subtracting 20202112021103 from its reverse (30112021120202), we obtain a palindrome (9909909099099).

The spelling of 20202112021103 in words is "twenty trillion, two hundred two billion, one hundred twelve million, twenty-one thousand, one hundred three".