221533606247012 has 24 divisors (see below), whose sum is σ = 387895517263800. Its totient is φ = 110706332016896.

The previous prime is 221533606247011. The next prime is 221533606247029. The reversal of 221533606247012 is 210742606335122.

It can be written as a sum of positive squares in 4 ways, for example, as 46291503933796 + 175242102313216 = 6803786^2 + 13237904^2 .

It is not an unprimeable number, because it can be changed into a prime (221533606247011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52026488 + ... + 56123280.

It is an arithmetic number, because the mean of its divisors is an integer number (16162313219325).

Almost surely, 2^{221533606247012} is an apocalyptic number.

It is an amenable number.

221533606247012 is a deficient number, since it is larger than the sum of its proper divisors (166361911016788).

221533606247012 is a wasteful number, since it uses less digits than its factorization.

221533606247012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104175 (or 4104173 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 221533606247012 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred six million, two hundred forty-seven thousand, twelve".