213122213340344 has 32 divisors (see below), whose sum is σ = 498207771446400. Its totient is φ = 83034628573920.

The previous prime is 213122213340341. The next prime is 213122213340403. The reversal of 213122213340344 is 443043312221312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122213340341) 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, 172988808914 + ... + 172988810145.

It is an arithmetic number, because the mean of its divisors is an integer number (15568992857700).

Almost surely, 2^{213122213340344} is an apocalyptic number.

It is an amenable number.

213122213340344 is an abundant number, since it is smaller than the sum of its proper divisors (285085558106056).

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

213122213340344 is a wasteful number, since it uses less digits than its factorization.

213122213340344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345977619083 (or 345977619079 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 213122213340344 its reverse (443043312221312), we get a palindrome (656165525561656).

The spelling of 213122213340344 in words is "two hundred thirteen trillion, one hundred twenty-two billion, two hundred thirteen million, three hundred forty thousand, three hundred forty-four".