221403342040 has 32 divisors (see below), whose sum is σ = 498174300000. Its totient is φ = 88558353664.

The previous prime is 221403342037. The next prime is 221403342103. The reversal of 221403342040 is 40243304122.

It is a happy number.

221403342040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221403341996 and 221403342014.

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 7 ways as a sum of consecutive naturals, for example, 1407261 + ... + 1556659.

It is an arithmetic number, because the mean of its divisors is an integer number (15567946875).

Almost surely, 2^221403342040 is an apocalyptic number.

221403342040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221403342040 is an abundant number, since it is smaller than the sum of its proper divisors (276770957960).

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

221403342040 is a wasteful number, since it uses less digits than its factorization.

221403342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186459 (or 186455 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221403342040 its reverse (40243304122), we get a palindrome (261646646162).

The spelling of 221403342040 in words is "two hundred twenty-one billion, four hundred three million, three hundred forty-two thousand, forty".