213420004422 has 32 divisors (see below), whose sum is σ = 427400012160. Its totient is φ = 71046719040.

The previous prime is 213420004393. The next prime is 213420004429. The reversal of 213420004422 is 224400024312.

It is a junction number, because it is equal to n+sod(n) for n = 213420004392 and 213420004401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420004429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32046529 + ... + 32053187.

It is an arithmetic number, because the mean of its divisors is an integer number (13356250380).

Almost surely, 2^213420004422 is an apocalyptic number.

213420004422 is an abundant number, since it is smaller than the sum of its proper divisors (213980007738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213420004422 is a wasteful number, since it uses less digits than its factorization.

213420004422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12868.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 213420004422 its reverse (224400024312), we get a palindrome (437820028734).

The spelling of 213420004422 in words is "two hundred thirteen billion, four hundred twenty million, four thousand, four hundred twenty-two".