2213123 has 4 divisors (see below), whose sum is σ = 2414328. Its totient is φ = 2011920.

The previous prime is 2213093. The next prime is 2213137. The reversal of 2213123 is 3213122.

It is a happy number.

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 2213123 - 2¹⁰ = 2212099 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2213098 and 2213107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213143) 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, 100586 + ... + 100607.

It is an arithmetic number, because the mean of its divisors is an integer number (603582).

2^2213123 is an apocalyptic number.

2213123 is a deficient number, since it is larger than the sum of its proper divisors (201205).

2213123 is a wasteful number, since it uses less digits than its factorization.

2213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201204.

The product of its digits is 72, while the sum is 14.

The square root of 2213123 is about 1487.6568824833. The cubic root of 2213123 is about 130.3172331302.

Adding to 2213123 its reverse (3213122), we get a palindrome (5426245).

Subtracting 2213123 from its reverse (3213122), we obtain a palindrome (999999).

The spelling of 2213123 in words is "two million, two hundred thirteen thousand, one hundred twenty-three".