2120103 has 12 divisors (see below), whose sum is σ = 3168360. Its totient is φ = 1364496.

The previous prime is 2120101. The next prime is 2120113. The reversal of 2120103 is 3010212.

It is a happy number.

It is not a de Polignac number, because 2120103 - 2¹ = 2120101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3801 + ... + 4322.

It is an arithmetic number, because the mean of its divisors is an integer number (264030).

2^2120103 is an apocalyptic number.

2120103 is a deficient number, since it is larger than the sum of its proper divisors (1048257).

2120103 is a wasteful number, since it uses less digits than its factorization.

2120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158 (or 8155 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2120103 is about 1456.0573477717. The cubic root of 2120103 is about 128.4652461945.

Adding to 2120103 its reverse (3010212), we get a palindrome (5130315).

The spelling of 2120103 in words is "two million, one hundred twenty thousand, one hundred three".