213420323204444 has 24 divisors (see below), whose sum is σ = 376792987597488. Its totient is φ = 105765195119360.

The previous prime is 213420323204437. The next prime is 213420323204447. The reversal of 213420323204444 is 444402323024312.

It is a junction number, because it is equal to n+sod(n) for n = 213420323204398 and 213420323204407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420323204447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79918439 + ... + 82545729.

It is an arithmetic number, because the mean of its divisors is an integer number (15699707816562).

Almost surely, 2^{213420323204444} is an apocalyptic number.

It is an amenable number.

213420323204444 is a deficient number, since it is larger than the sum of its proper divisors (163372664393044).

213420323204444 is a wasteful number, since it uses less digits than its factorization.

213420323204444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807125 (or 2807123 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 213420323204444 its reverse (444402323024312), we get a palindrome (657822646228756).

The spelling of 213420323204444 in words is "two hundred thirteen trillion, four hundred twenty billion, three hundred twenty-three million, two hundred four thousand, four hundred forty-four".