213344444421055 has 8 divisors (see below), whose sum is σ = 256773016788912. Its totient is φ = 170169099881088.

The previous prime is 213344444421049. The next prime is 213344444421103. The reversal of 213344444421055 is 550124444443312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213344444421055 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213344444420996 and 213344444421014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63306955117 + ... + 63306958486.

It is an arithmetic number, because the mean of its divisors is an integer number (32096627098614).

Almost surely, 2^{213344444421055} is an apocalyptic number.

213344444421055 is a deficient number, since it is larger than the sum of its proper divisors (43428572367857).

213344444421055 is a wasteful number, since it uses less digits than its factorization.

213344444421055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126613913945.

The product of its (nonzero) digits is 3686400, while the sum is 46.

Adding to 213344444421055 its reverse (550124444443312), we get a palindrome (763468888864367).

The spelling of 213344444421055 in words is "two hundred thirteen trillion, three hundred forty-four billion, four hundred forty-four million, four hundred twenty-one thousand, fifty-five".