111221232210231 has 64 divisors (see below), whose sum is σ = 179970947788800. Its totient is φ = 60170905728000.

The previous prime is 111221232210203. The next prime is 111221232210239. The reversal of 111221232210231 is 132012232122111.

It is not a de Polignac number, because 111221232210231 - 2⁹ = 111221232209719 is a prime.

It is a super-2 number, since 2×111221232210231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221232210239) 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 63 ways as a sum of consecutive naturals, for example, 15337995 + ... + 21393843.

It is an arithmetic number, because the mean of its divisors is an integer number (2812046059200).

Almost surely, 2^{111221232210231} is an apocalyptic number.

111221232210231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111221232210231 is a deficient number, since it is larger than the sum of its proper divisors (68749715578569).

111221232210231 is a wasteful number, since it uses less digits than its factorization.

111221232210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057288.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 111221232210231 its reverse (132012232122111), we get a palindrome (243233464332342).

The spelling of 111221232210231 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred thirty-two million, two hundred ten thousand, two hundred thirty-one".