102001021103 has 4 divisors (see below), whose sum is σ = 104488850928. Its totient is φ = 99513191280.

The previous prime is 102001021099. The next prime is 102001021123. The reversal of 102001021103 is 301120100201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301120100201 = 7109 ⋅42357589.

It is a cyclic number.

It is not a de Polignac number, because 102001021103 - 2² = 102001021099 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 (102001021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243914851 + ... + 1243914932.

It is an arithmetic number, because the mean of its divisors is an integer number (26122212732).

Almost surely, 2^102001021103 is an apocalyptic number.

102001021103 is a deficient number, since it is larger than the sum of its proper divisors (2487829825).

102001021103 is an equidigital number, since it uses as much as digits as its factorization.

102001021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487829824.

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

Adding to 102001021103 its reverse (301120100201), we get a palindrome (403121121304).

The spelling of 102001021103 in words is "one hundred two billion, one million, twenty-one thousand, one hundred three".