221533606247013 has 20 divisors (see below), whose sum is σ = 337974043894080. Its totient is φ = 144546750172872.

The previous prime is 221533606247011. The next prime is 221533606247029. The reversal of 221533606247013 is 310742606335122.

It is a happy number.

221533606247013 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 3 + 3 + 6 + 0 + 624 + 7 + 0 + 13 = 666.

It is not a de Polignac number, because 221533606247013 - 2¹ = 221533606247011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221533606247013.

It is a congruent number.

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

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29095557823 + ... + 29095565436.

It is an arithmetic number, because the mean of its divisors is an integer number (16898702194704).

Almost surely, 2^{221533606247013} is an apocalyptic number.

It is an amenable number.

221533606247013 is a deficient number, since it is larger than the sum of its proper divisors (116440437647067).

221533606247013 is an equidigital number, since it uses as much as digits as its factorization.

221533606247013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58191123318 (or 58191123309 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 221533606247013 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred six million, two hundred forty-seven thousand, thirteen".