221404231302 has 32 divisors (see below), whose sum is σ = 447922971360. Its totient is φ = 72951379200.

The previous prime is 221404231289. The next prime is 221404231309. The reversal of 221404231302 is 203132404122.

It is a happy number.

221404231302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221404231309) by changing a digit.

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, 73474 + ... + 669482.

It is an arithmetic number, because the mean of its divisors is an integer number (13997592855).

Almost surely, 2^221404231302 is an apocalyptic number.

221404231302 is an abundant number, since it is smaller than the sum of its proper divisors (226518740058).

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

221404231302 is a wasteful number, since it uses less digits than its factorization.

221404231302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596728.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221404231302 its reverse (203132404122), we get a palindrome (424536635424).

The spelling of 221404231302 in words is "two hundred twenty-one billion, four hundred four million, two hundred thirty-one thousand, three hundred two".