221012122223344 has 80 divisors (see below), whose sum is σ = 435528120596800. Its totient is φ = 108627993796608.

The previous prime is 221012122223341. The next prime is 221012122223363. The reversal of 221012122223344 is 443322221210122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012122223341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2693947477 + ... + 2694029515.

It is an arithmetic number, because the mean of its divisors is an integer number (5444101507460).

Almost surely, 2^{221012122223344} is an apocalyptic number.

It is an amenable number.

221012122223344 is a deficient number, since it is larger than the sum of its proper divisors (214515998373456).

221012122223344 is a wasteful number, since it uses less digits than its factorization.

221012122223344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89802 (or 89796 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 221012122223344 its reverse (443322221210122), we get a palindrome (664334343433466).

The spelling of 221012122223344 in words is "two hundred twenty-one trillion, twelve billion, one hundred twenty-two million, two hundred twenty-three thousand, three hundred forty-four".