213422123443 has 16 divisors (see below), whose sum is σ = 223365600000. Its totient is φ = 203653069312.

The previous prime is 213422123417. The next prime is 213422123461. The reversal of 213422123443 is 344321224312.

It is a cyclic number.

It is not a de Polignac number, because 213422123443 - 2²¹ = 213420026291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213422523443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5910558 + ... + 5946556.

It is an arithmetic number, because the mean of its divisors is an integer number (13960350000).

Almost surely, 2^213422123443 is an apocalyptic number.

213422123443 is a deficient number, since it is larger than the sum of its proper divisors (9943476557).

213422123443 is a wasteful number, since it uses less digits than its factorization.

213422123443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38414.

The product of its digits is 27648, while the sum is 31.

Adding to 213422123443 its reverse (344321224312), we get a palindrome (557743347755).

The spelling of 213422123443 in words is "two hundred thirteen billion, four hundred twenty-two million, one hundred twenty-three thousand, four hundred forty-three".