111222121231 has 8 divisors (see below), whose sum is σ = 121220774640. Its totient is φ = 101429625792.

The previous prime is 111222121201. The next prime is 111222121273. The reversal of 111222121231 is 132121222111.

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

It is a cyclic number.

It is not a de Polignac number, because 111222121231 - 2⁹ = 111222120719 is a prime.

It is a super-2 number, since 2×111222121231² (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 = 111222121199 and 111222121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222121201) 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, 51538366 + ... + 51540523.

It is an arithmetic number, because the mean of its divisors is an integer number (15152596830).

Almost surely, 2^111222121231 is an apocalyptic number.

111222121231 is a deficient number, since it is larger than the sum of its proper divisors (9998653409).

111222121231 is a wasteful number, since it uses less digits than its factorization.

111222121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103078985.

The product of its digits is 96, while the sum is 19.

Adding to 111222121231 its reverse (132121222111), we get a palindrome (243343343342).

The spelling of 111222121231 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred thirty-one".