221223440140 has 12 divisors (see below), whose sum is σ = 464569224336. Its totient is φ = 88489376048.

The previous prime is 221223440117. The next prime is 221223440173. The reversal of 221223440140 is 41044322122.

221223440140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

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 3 ways as a sum of consecutive naturals, for example, 5530585984 + ... + 5530586023.

It is an arithmetic number, because the mean of its divisors is an integer number (38714102028).

Almost surely, 2^221223440140 is an apocalyptic number.

221223440140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221223440140 is an abundant number, since it is smaller than the sum of its proper divisors (243345784196).

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

221223440140 is a wasteful number, since it uses less digits than its factorization.

221223440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061172016 (or 11061172014 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221223440140 its reverse (41044322122), we get a palindrome (262267762262).

The spelling of 221223440140 in words is "two hundred twenty-one billion, two hundred twenty-three million, four hundred forty thousand, one hundred forty".