221108933440 has 112 divisors (see below), whose sum is σ = 558190139904. Its totient is φ = 83277158400.

The previous prime is 221108933429. The next prime is 221108933483. The reversal of 221108933440 is 44339801122.

221108933440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 221108933440.

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 15 ways as a sum of consecutive naturals, for example, 65835 + ... + 668245.

Almost surely, 2^221108933440 is an apocalyptic number.

221108933440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221108933440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279095069952).

221108933440 is an abundant number, since it is smaller than the sum of its proper divisors (337081206464).

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

221108933440 is a wasteful number, since it uses less digits than its factorization.

221108933440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602496 (or 602486 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 221108933440 in words is "two hundred twenty-one billion, one hundred eight million, nine hundred thirty-three thousand, four hundred forty".