221212124344 has 64 divisors (see below), whose sum is σ = 426341836800. Its totient is φ = 107545463424.

The previous prime is 221212124339. The next prime is 221212124489. The reversal of 221212124344 is 443421212122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90771094 + ... + 90773530.

It is an arithmetic number, because the mean of its divisors is an integer number (6661591200).

Almost surely, 2^221212124344 is an apocalyptic number.

It is an amenable number.

221212124344 is a deficient number, since it is larger than the sum of its proper divisors (205129712456).

221212124344 is a wasteful number, since it uses less digits than its factorization.

221212124344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3568 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 221212124344 its reverse (443421212122), we get a palindrome (664633336466).

The spelling of 221212124344 in words is "two hundred twenty-one billion, two hundred twelve million, one hundred twenty-four thousand, three hundred forty-four".