111222122231 has 8 divisors (see below), whose sum is σ = 122534544528. Its totient is φ = 100109920000.

The previous prime is 111222122131. The next prime is 111222122257. The reversal of 111222122231 is 132221222111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222122231 is a prime.

It is a super-2 number, since 2×111222122231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222122131) 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, 50053850 + ... + 50056071.

It is an arithmetic number, because the mean of its divisors is an integer number (15316818066).

Almost surely, 2^111222122231 is an apocalyptic number.

111222122231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111222122231 is a deficient number, since it is larger than the sum of its proper divisors (11312422297).

111222122231 is a wasteful number, since it uses less digits than its factorization.

111222122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100110033.

The product of its digits is 192, while the sum is 20.

Adding to 111222122231 its reverse (132221222111), we get a palindrome (243443344342).

The spelling of 111222122231 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred thirty-one".