111123020321331 has 4 divisors (see below), whose sum is σ = 148164027095112. Its totient is φ = 74082013547552.

The previous prime is 111123020321329. The next prime is 111123020321413. The reversal of 111123020321331 is 133123020321111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111123020321331 - 2¹ = 111123020321329 is a prime.

It is a super-2 number, since 2×111123020321331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111123020321321) 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 3 ways as a sum of consecutive naturals, for example, 18520503386886 + ... + 18520503386891.

It is an arithmetic number, because the mean of its divisors is an integer number (37041006773778).

Almost surely, 2^{111123020321331} is an apocalyptic number.

111123020321331 is a deficient number, since it is larger than the sum of its proper divisors (37041006773781).

111123020321331 is an equidigital number, since it uses as much as digits as its factorization.

111123020321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37041006773780.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 111123020321331 its reverse (133123020321111), we get a palindrome (244246040642442).

The spelling of 111123020321331 in words is "one hundred eleven trillion, one hundred twenty-three billion, twenty million, three hundred twenty-one thousand, three hundred thirty-one".