111231231110111 has 16 divisors (see below), whose sum is σ = 129881766380544. Its totient is φ = 93272524708704.

The previous prime is 111231231110093. The next prime is 111231231110113. The reversal of 111231231110111 is 111011132132111.

It is a cyclic number.

It is not a de Polignac number, because 111231231110111 - 2¹⁴ = 111231231093727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111231231110113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71690405 + ... + 73225518.

It is an arithmetic number, because the mean of its divisors is an integer number (8117610398784).

Almost surely, 2^{111231231110111} is an apocalyptic number.

111231231110111 is a deficient number, since it is larger than the sum of its proper divisors (18650535270433).

111231231110111 is a wasteful number, since it uses less digits than its factorization.

111231231110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144918310.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 111231231110111 its reverse (111011132132111), we get a palindrome (222242363242222).

The spelling of 111231231110111 in words is "one hundred eleven trillion, two hundred thirty-one billion, two hundred thirty-one million, one hundred ten thousand, one hundred eleven".