221339136913 has 8 divisors (see below), whose sum is σ = 221474107008. Its totient is φ = 221204209584.

The previous prime is 221339136881. The next prime is 221339136917. The reversal of 221339136913 is 319631933122.

221339136913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221339136913 - 2⁵ = 221339136881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221339136913.

It is not an unprimeable number, because it can be changed into a prime (221339136917) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20636170 + ... + 20646892.

It is an arithmetic number, because the mean of its divisors is an integer number (27684263376).

Almost surely, 2^221339136913 is an apocalyptic number.

It is an amenable number.

221339136913 is a deficient number, since it is larger than the sum of its proper divisors (134970095).

221339136913 is a wasteful number, since it uses less digits than its factorization.

221339136913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21383.

The product of its digits is 157464, while the sum is 43.

The spelling of 221339136913 in words is "two hundred twenty-one billion, three hundred thirty-nine million, one hundred thirty-six thousand, nine hundred thirteen".