2123444213 has 4 divisors (see below), whose sum is σ = 2316484608. Its totient is φ = 1930403820.

The previous prime is 2123444209. The next prime is 2123444227. The reversal of 2123444213 is 3124443212.

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 2123444213 - 2² = 2123444209 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 (2123444233) 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, 96520181 + ... + 96520202.

It is an arithmetic number, because the mean of its divisors is an integer number (579121152).

Almost surely, 2^2123444213 is an apocalyptic number.

It is an amenable number.

2123444213 is a deficient number, since it is larger than the sum of its proper divisors (193040395).

2123444213 is a wasteful number, since it uses less digits than its factorization.

2123444213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193040394.

The product of its digits is 4608, while the sum is 26.

The square root of 2123444213 is about 46080.8443173517. The cubic root of 2123444213 is about 1285.3269644947.

Adding to 2123444213 its reverse (3124443212), we get a palindrome (5247887425).

The spelling of 2123444213 in words is "two billion, one hundred twenty-three million, four hundred forty-four thousand, two hundred thirteen".