111421224321 has 16 divisors (see below), whose sum is σ = 162073567488. Its totient is φ = 67525376400.

The previous prime is 111421224289. The next prime is 111421224329. The reversal of 111421224321 is 123422124111.

It is not a de Polignac number, because 111421224321 - 2⁵ = 111421224289 is a prime.

It is a super-2 number, since 2×111421224321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111421224291 and 111421224300.

It is not an unprimeable number, because it can be changed into a prime (111421224329) 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 15 ways as a sum of consecutive naturals, for example, 1098066 + ... + 1195236.

It is an arithmetic number, because the mean of its divisors is an integer number (10129597968).

Almost surely, 2^111421224321 is an apocalyptic number.

111421224321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111421224321 is a deficient number, since it is larger than the sum of its proper divisors (50652343167).

111421224321 is a wasteful number, since it uses less digits than its factorization.

111421224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131932.

The product of its digits is 768, while the sum is 24.

Adding to 111421224321 its reverse (123422124111), we get a palindrome (234843348432).

The spelling of 111421224321 in words is "one hundred eleven billion, four hundred twenty-one million, two hundred twenty-four thousand, three hundred twenty-one".