111201121212231 has 32 divisors (see below), whose sum is σ = 154637758679040. Its totient is φ = 71017678131200.

The previous prime is 111201121212217. The next prime is 111201121212241. The reversal of 111201121212231 is 132212121102111.

It is a cyclic number.

It is not a de Polignac number, because 111201121212231 - 2²⁶ = 111201054103367 is a prime.

It is a super-2 number, since 2×111201121212231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111201121212198 and 111201121212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201121212241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2615130 + ... + 15140711.

It is an arithmetic number, because the mean of its divisors is an integer number (4832429958720).

Almost surely, 2^{111201121212231} is an apocalyptic number.

111201121212231 is a deficient number, since it is larger than the sum of its proper divisors (43436637466809).

111201121212231 is a wasteful number, since it uses less digits than its factorization.

111201121212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17756807.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 111201121212231 its reverse (132212121102111), we get a palindrome (243413242314342).

The spelling of 111201121212231 in words is "one hundred eleven trillion, two hundred one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred thirty-one".