111001232133221 has 16 divisors (see below), whose sum is σ = 115769085452160. Its totient is φ = 106298268148800.

The previous prime is 111001232133217. The next prime is 111001232133247. The reversal of 111001232133221 is 122331232100111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111001232133221 - 2² = 111001232133217 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 (111001232133271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16895450 + ... + 22526843.

It is an arithmetic number, because the mean of its divisors is an integer number (7235567840760).

Almost surely, 2^{111001232133221} is an apocalyptic number.

It is an amenable number.

111001232133221 is a deficient number, since it is larger than the sum of its proper divisors (4767853318939).

111001232133221 is a wasteful number, since it uses less digits than its factorization.

111001232133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39423116.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 111001232133221 its reverse (122331232100111), we get a palindrome (233332464233332).

The spelling of 111001232133221 in words is "one hundred eleven trillion, one billion, two hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty-one".