221413111533444 has 144 divisors (see below), whose sum is σ = 527739575650560. Its totient is φ = 72242927216640.

The previous prime is 221413111533437. The next prime is 221413111533527. The reversal of 221413111533444 is 444335111314122.

It is a happy number.

It is a super-2 number, since 2×221413111533444² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10138416277 + ... + 10138438115.

It is an arithmetic number, because the mean of its divisors is an integer number (3664858164240).

Almost surely, 2^{221413111533444} is an apocalyptic number.

It is an amenable number.

221413111533444 is an abundant number, since it is smaller than the sum of its proper divisors (306326464117116).

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

221413111533444 is a wasteful number, since it uses less digits than its factorization.

221413111533444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22970 (or 22865 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

Adding to 221413111533444 its reverse (444335111314122), we get a palindrome (665748222847566).

The spelling of 221413111533444 in words is "two hundred twenty-one trillion, four hundred thirteen billion, one hundred eleven million, five hundred thirty-three thousand, four hundred forty-four".