20112321103 has 8 divisors (see below), whose sum is σ = 23006096672. Its totient is φ = 17223692256.

The previous prime is 20112321101. The next prime is 20112321167. The reversal of 20112321103 is 30112321102.

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 20112321103 - 2¹ = 20112321101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112321101) 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 7 ways as a sum of consecutive naturals, for example, 1278300 + ... + 1293937.

It is an arithmetic number, because the mean of its divisors is an integer number (2875762084).

Almost surely, 2^20112321103 is an apocalyptic number.

20112321103 is a deficient number, since it is larger than the sum of its proper divisors (2893775569).

20112321103 is a wasteful number, since it uses less digits than its factorization.

20112321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573361.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20112321103 its reverse (30112321102), we get a palindrome (50224642205).

Subtracting 20112321103 from its reverse (30112321102), we obtain a palindrome (9999999999).

The spelling of 20112321103 in words is "twenty billion, one hundred twelve million, three hundred twenty-one thousand, one hundred three".