42443212213 has 4 divisors (see below), whose sum is σ = 42612308928. Its totient is φ = 42274115500.

The previous prime is 42443212183. The next prime is 42443212241. The reversal of 42443212213 is 31221234424.

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 a de Polignac number, because none of the positive numbers 2^k-42443212213 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 (42443212613) 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, 84547981 + ... + 84548482.

It is an arithmetic number, because the mean of its divisors is an integer number (10653077232).

Almost surely, 2^42443212213 is an apocalyptic number.

It is an amenable number.

42443212213 is a deficient number, since it is larger than the sum of its proper divisors (169096715).

42443212213 is a wasteful number, since it uses less digits than its factorization.

42443212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169096714.

The product of its digits is 9216, while the sum is 28.

Adding to 42443212213 its reverse (31221234424), we get a palindrome (73664446637).

It can be divided in two parts, 424432 and 12213, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 42443212213 in words is "forty-two billion, four hundred forty-three million, two hundred twelve thousand, two hundred thirteen".