1021103103 has 4 divisors (see below), whose sum is σ = 1361470808. Its totient is φ = 680735400.

The previous prime is 1021103093. The next prime is 1021103107. The reversal of 1021103103 is 3013011201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1021103103 - 2⁴ = 1021103087 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 (1021103107) 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, 170183848 + ... + 170183853.

It is an arithmetic number, because the mean of its divisors is an integer number (340367702).

Almost surely, 2^1021103103 is an apocalyptic number.

1021103103 is a deficient number, since it is larger than the sum of its proper divisors (340367705).

1021103103 is an equidigital number, since it uses as much as digits as its factorization.

1021103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340367704.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1021103103 is about 31954.7039260263. The cubic root of 1021103103 is about 1006.9854574289.

Adding to 1021103103 its reverse (3013011201), we get a palindrome (4034114304).

The spelling of 1021103103 in words is "one billion, twenty-one million, one hundred three thousand, one hundred three".