1010203111103 has 4 divisors (see below), whose sum is σ = 1010431616568. Its totient is φ = 1009974605640.

The previous prime is 1010203111069. The next prime is 1010203111117. The reversal of 1010203111103 is 3011113020101.

It is a happy number.

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 1010203111103 - 2¹⁸ = 1010202848959 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 (1010203111153) 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, 114246101 + ... + 114254942.

It is an arithmetic number, because the mean of its divisors is an integer number (252607904142).

Almost surely, 2^{1010203111103} is an apocalyptic number.

1010203111103 is a deficient number, since it is larger than the sum of its proper divisors (228505465).

1010203111103 is an equidigital number, since it uses as much as digits as its factorization.

1010203111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228505464.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1010203111103 its reverse (3011113020101), we get a palindrome (4021316131204).

It can be divided in two parts, 101020 and 3111103, that added together give a palindrome (3212123).

The spelling of 1010203111103 in words is "one trillion, ten billion, two hundred three million, one hundred eleven thousand, one hundred three".