111123421302321 has 24 divisors (see below), whose sum is σ = 172281597588360. Its totient is φ = 68769369501696.

The previous prime is 111123421302269. The next prime is 111123421302329. The reversal of 111123421302321 is 123203124321111.

111123421302321 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 2 + 3 + 421 + 3 + 0 + 232 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23271323329296 + 87852097973025 = 4824036^2 + 9372945^2 .

It is not a de Polignac number, because 111123421302321 - 2¹⁷ = 111123421171249 is a prime.

It is a super-2 number, since 2×111123421302321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111123421302329) 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 23 ways as a sum of consecutive naturals, for example, 4974624936 + ... + 4974647273.

It is an arithmetic number, because the mean of its divisors is an integer number (7178399899515).

Almost surely, 2^{111123421302321} is an apocalyptic number.

It is an amenable number.

111123421302321 is a deficient number, since it is larger than the sum of its proper divisors (61158176286039).

111123421302321 is a wasteful number, since it uses less digits than its factorization.

111123421302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949272305 (or 9949272302 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 111123421302321 its reverse (123203124321111), we get a palindrome (234326545623432).

The spelling of 111123421302321 in words is "one hundred eleven trillion, one hundred twenty-three billion, four hundred twenty-one million, three hundred two thousand, three hundred twenty-one".