2421213 has 4 divisors (see below), whose sum is σ = 3228288. Its totient is φ = 1614140.

The previous prime is 2421203. The next prime is 2421229. The reversal of 2421213 is 3121242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2421213 - 2⁶ = 2421149 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2421192 and 2421201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403533 + ... + 403538.

It is an arithmetic number, because the mean of its divisors is an integer number (807072).

2^2421213 is an apocalyptic number.

It is an amenable number.

2421213 is a deficient number, since it is larger than the sum of its proper divisors (807075).

2421213 is an equidigital number, since it uses as much as digits as its factorization.

2421213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807074.

The product of its digits is 96, while the sum is 15.

The square root of 2421213 is about 1556.0247427339. The cubic root of 2421213 is about 134.2798968680.

Adding to 2421213 its reverse (3121242), we get a palindrome (5542455).

The spelling of 2421213 in words is "two million, four hundred twenty-one thousand, two hundred thirteen".