2211123103 has 4 divisors (see below), whose sum is σ = 2526997840. Its totient is φ = 1895248368.

The previous prime is 2211123023. The next prime is 2211123107. The reversal of 2211123103 is 3013211122.

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 2211123103 - 2⁹ = 2211122591 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 (2211123107) 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, 157937358 + ... + 157937371.

It is an arithmetic number, because the mean of its divisors is an integer number (631749460).

Almost surely, 2^2211123103 is an apocalyptic number.

2211123103 is a deficient number, since it is larger than the sum of its proper divisors (315874737).

2211123103 is an equidigital number, since it uses as much as digits as its factorization.

2211123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315874736.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2211123103 is about 47022.5807777497. The cubic root of 2211123103 is about 1302.7796741279.

Adding to 2211123103 its reverse (3013211122), we get a palindrome (5224334225).

The spelling of 2211123103 in words is "two billion, two hundred eleven million, one hundred twenty-three thousand, one hundred three".