1020011103 has 16 divisors (see below), whose sum is σ = 1513593600. Its totient is φ = 678897720.

The previous prime is 1020011093. The next prime is 1020011123. The reversal of 1020011103 is 3011100201.

It is not a de Polignac number, because 1020011103 - 2⁴ = 1020011087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020011123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13803 + ... + 47228.

It is an arithmetic number, because the mean of its divisors is an integer number (94599600).

Almost surely, 2^1020011103 is an apocalyptic number.

1020011103 is a deficient number, since it is larger than the sum of its proper divisors (493582497).

1020011103 is an equidigital number, since it uses as much as digits as its factorization.

1020011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61659 (or 61653 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1020011103 is about 31937.6126690772. The cubic root of 1020011103 is about 1006.6263620083.

Adding to 1020011103 its reverse (3011100201), we get a palindrome (4031111304).

The spelling of 1020011103 in words is "one billion, twenty million, eleven thousand, one hundred three".