11111020103 has 8 divisors (see below), whose sum is σ = 11228424480. Its totient is φ = 10993674240.

The previous prime is 11111020091. The next prime is 11111020121. The reversal of 11111020103 is 30102011111.

It is a happy number.

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 11111020103 - 2²⁰ = 11109971527 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 (11111020163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441623 + ... + 466103.

It is an arithmetic number, because the mean of its divisors is an integer number (1403553060).

Almost surely, 2^11111020103 is an apocalyptic number.

11111020103 is a deficient number, since it is larger than the sum of its proper divisors (117404377).

11111020103 is an equidigital number, since it uses as much as digits as its factorization.

11111020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29257.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11111020103 its reverse (30102011111), we get a palindrome (41213031214).

The spelling of 11111020103 in words is "eleven billion, one hundred eleven million, twenty thousand, one hundred three".