111123212331 has 8 divisors (see below), whose sum is σ = 152168723344. Its totient is φ = 72079921440.

The previous prime is 111123212309. The next prime is 111123212359. The reversal of 111123212331 is 133212321111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111123212331 - 2⁷ = 111123212203 is a prime.

It is a super-2 number, since 2×111123212331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111123212298 and 111123212307.

It is not an unprimeable number, because it can be changed into a prime (111123212371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500554900 + ... + 500555121.

It is an arithmetic number, because the mean of its divisors is an integer number (19021090418).

Almost surely, 2^111123212331 is an apocalyptic number.

111123212331 is a deficient number, since it is larger than the sum of its proper divisors (41045511013).

111123212331 is a wasteful number, since it uses less digits than its factorization.

111123212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001110061.

The product of its digits is 216, while the sum is 21.

Adding to 111123212331 its reverse (133212321111), we get a palindrome (244335533442).

The spelling of 111123212331 in words is "one hundred eleven billion, one hundred twenty-three million, two hundred twelve thousand, three hundred thirty-one".