2111021103 has 4 divisors (see below), whose sum is σ = 2814694808. Its totient is φ = 1407347400.

The previous prime is 2111021093. The next prime is 2111021113. The reversal of 2111021103 is 3011201112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2111021093) and next prime (2111021113).

It is not a de Polignac number, because 2111021103 - 2¹⁷ = 2110890031 is a prime.

It is a super-2 number, since 2×2111021103² = 8912820194622673218, 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 (2111021113) 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, 351836848 + ... + 351836853.

It is an arithmetic number, because the mean of its divisors is an integer number (703673702).

Almost surely, 2^2111021103 is an apocalyptic number.

2111021103 is a deficient number, since it is larger than the sum of its proper divisors (703673705).

2111021103 is an equidigital number, since it uses as much as digits as its factorization.

2111021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703673704.

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

The square root of 2111021103 is about 45945.8496819898. The cubic root of 2111021103 is about 1282.8154787814.

Adding to 2111021103 its reverse (3011201112), we get a palindrome (5122222215).

Subtracting 2111021103 from its reverse (3011201112), we obtain a square (900180009 = 30003²).

The spelling of 2111021103 in words is "two billion, one hundred eleven million, twenty-one thousand, one hundred three".