221332520013 has 32 divisors (see below), whose sum is σ = 323565166080. Its totient is φ = 133464711360.

The previous prime is 221332519997. The next prime is 221332520033. The reversal of 221332520013 is 310025233122.

It is a happy number.

It is not a de Polignac number, because 221332520013 - 2⁴ = 221332519997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221332520033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5326923 + ... + 5368311.

It is an arithmetic number, because the mean of its divisors is an integer number (10111411440).

Almost surely, 2^221332520013 is an apocalyptic number.

It is an amenable number.

221332520013 is a deficient number, since it is larger than the sum of its proper divisors (102232646067).

221332520013 is a wasteful number, since it uses less digits than its factorization.

221332520013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42217.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 221332520013 its reverse (310025233122), we get a palindrome (531357753135).

The spelling of 221332520013 in words is "two hundred twenty-one billion, three hundred thirty-two million, five hundred twenty thousand, thirteen".