221032450430405 has 16 divisors (see below), whose sum is σ = 267667115796480. Its totient is φ = 175210715155392.

The previous prime is 221032450430329. The next prime is 221032450430413. The reversal of 221032450430405 is 504034054230122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221032450430405 - 2⁸ = 221032450430149 is a prime.

It is a Curzon number.

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, 220645490 + ... + 221644979.

It is an arithmetic number, because the mean of its divisors is an integer number (16729194737280).

Almost surely, 2^{221032450430405} is an apocalyptic number.

It is an amenable number.

221032450430405 is a deficient number, since it is larger than the sum of its proper divisors (46634665366075).

221032450430405 is a wasteful number, since it uses less digits than its factorization.

221032450430405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442291388.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 221032450430405 in words is "two hundred twenty-one trillion, thirty-two billion, four hundred fifty million, four hundred thirty thousand, four hundred five".