221144313340 has 48 divisors (see below), whose sum is σ = 503714109024. Its totient is φ = 81223731200.

The previous prime is 221144313319. The next prime is 221144313347. The reversal of 221144313340 is 43313441122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221144313299 and 221144313308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221144313347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7918066 + ... + 7945945.

It is an arithmetic number, because the mean of its divisors is an integer number (10494043938).

Almost surely, 2^221144313340 is an apocalyptic number.

221144313340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221144313340 is an abundant number, since it is smaller than the sum of its proper divisors (282569795684).

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

221144313340 is a wasteful number, since it uses less digits than its factorization.

221144313340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15864078 (or 15864076 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221144313340 its reverse (43313441122), we get a palindrome (264457754462).

The spelling of 221144313340 in words is "two hundred twenty-one billion, one hundred forty-four million, three hundred thirteen thousand, three hundred forty".