221211104223344 has 20 divisors (see below), whose sum is σ = 429186055740624. Its totient is φ = 110453412419328.

The previous prime is 221211104223293. The next prime is 221211104223359. The reversal of 221211104223344 is 443322401112122.

It is a super-2 number, since 2×221211104223344² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221211104223344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9508718777 + ... + 9508742040.

Almost surely, 2^{221211104223344} is an apocalyptic number.

It is an amenable number.

221211104223344 is a deficient number, since it is larger than the sum of its proper divisors (207974951517280).

221211104223344 is a wasteful number, since it uses less digits than its factorization.

221211104223344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017461552 (or 19017461546 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 221211104223344 its reverse (443322401112122), we get a palindrome (664533505335466).

The spelling of 221211104223344 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred four million, two hundred twenty-three thousand, three hundred forty-four".