111068635472221 has 16 divisors (see below), whose sum is σ = 128401494807168. Its totient is φ = 94105329336000.

The previous prime is 111068635472219. The next prime is 111068635472281. The reversal of 111068635472221 is 122274536860111.

It is a cyclic number.

It is not a de Polignac number, because 111068635472221 - 2¹ = 111068635472219 is a prime.

It is a super-2 number, since 2×111068635472221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111068635472281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127705675 + ... + 128572456.

It is an arithmetic number, because the mean of its divisors is an integer number (8025093425448).

Almost surely, 2^{111068635472221} is an apocalyptic number.

It is an amenable number.

111068635472221 is a deficient number, since it is larger than the sum of its proper divisors (17332859334947).

111068635472221 is a wasteful number, since it uses less digits than its factorization.

111068635472221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256278852.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 111068635472221 in words is "one hundred eleven trillion, sixty-eight billion, six hundred thirty-five million, four hundred seventy-two thousand, two hundred twenty-one".