221412504431473 has 8 divisors (see below), whose sum is σ = 223808540472360. Its totient is φ = 219020465116800.

The previous prime is 221412504431399. The next prime is 221412504431507. The reversal of 221412504431473 is 374134405214122.

It can be written as a sum of positive squares in 4 ways, for example, as 57099664570624 + 164312839860849 = 7556432^2 + 12818457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221412504431473 - 2²¹ = 221412502334321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221412504437473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999070158 + ... + 999291751.

It is an arithmetic number, because the mean of its divisors is an integer number (27976067559045).

Almost surely, 2^{221412504431473} is an apocalyptic number.

It is an amenable number.

221412504431473 is a deficient number, since it is larger than the sum of its proper divisors (2396036040887).

221412504431473 is a wasteful number, since it uses less digits than its factorization.

221412504431473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998363107.

The product of its (nonzero) digits is 645120, while the sum is 43.

Adding to 221412504431473 its reverse (374134405214122), we get a palindrome (595546909645595).

The spelling of 221412504431473 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred four million, four hundred thirty-one thousand, four hundred seventy-three".