1111220103 has 16 divisors (see below), whose sum is σ = 1721048576. Its totient is φ = 624572640.

The previous prime is 1111220087. The next prime is 1111220119. The reversal of 1111220103 is 3010221111.

It is an interprime number because it is at equal distance from previous prime (1111220087) and next prime (1111220119).

It is not a de Polignac number, because 1111220103 - 2⁴ = 1111220087 is a prime.

It is a super-2 number, since 2×1111220103² = 2469620234622661218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220153) 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, 432451 + ... + 435012.

It is an arithmetic number, because the mean of its divisors is an integer number (107565536).

Almost surely, 2^1111220103 is an apocalyptic number.

1111220103 is a deficient number, since it is larger than the sum of its proper divisors (609828473).

1111220103 is an equidigital number, since it uses as much as digits as its factorization.

1111220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867534.

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

The square root of 1111220103 is about 33334.9681715762. The cubic root of 1111220103 is about 1035.7780338580.

Adding to 1111220103 its reverse (3010221111), we get a palindrome (4121441214).

The spelling of 1111220103 in words is "one billion, one hundred eleven million, two hundred twenty thousand, one hundred three".