221133498444 has 96 divisors (see below), whose sum is σ = 586464399360. Its totient is φ = 72024898176.

The previous prime is 221133498437. The next prime is 221133498473. The reversal of 221133498444 is 444894331122.

221133498444 is a `hidden beast` number, since 2 + 2 + 113 + 3 + 4 + 98 + 444 = 666.

221133498444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221133498444² (a number of 23 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 221133498444.

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 31 ways as a sum of consecutive naturals, for example, 3096589 + ... + 3167195.

It is an arithmetic number, because the mean of its divisors is an integer number (6109004160).

Almost surely, 2^221133498444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221133498444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293232199680).

221133498444 is an abundant number, since it is smaller than the sum of its proper divisors (365330900916).

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

221133498444 is a wasteful number, since it uses less digits than its factorization.

221133498444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71284 (or 71276 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 221133498444 in words is "two hundred twenty-one billion, one hundred thirty-three million, four hundred ninety-eight thousand, four hundred forty-four".