221350523111 has 8 divisors (see below), whose sum is σ = 228996279120. Its totient is φ = 213705632448.

The previous prime is 221350523083. The next prime is 221350523123. The reversal of 221350523111 is 111325053122.

221350523111 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 a de Polignac number, because none of the positive numbers 2^k-221350523111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221350523011) 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, 327275 + ... + 741491.

It is an arithmetic number, because the mean of its divisors is an integer number (28624534890).

Almost surely, 2^221350523111 is an apocalyptic number.

221350523111 is a deficient number, since it is larger than the sum of its proper divisors (7645756009).

221350523111 is a wasteful number, since it uses less digits than its factorization.

221350523111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432673.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 221350523111 its reverse (111325053122), we get a palindrome (332675576233).

The spelling of 221350523111 in words is "two hundred twenty-one billion, three hundred fifty million, five hundred twenty-three thousand, one hundred eleven".