111232131142 has 32 divisors (see below), whose sum is σ = 183846205440. Its totient is φ = 50053750080.

The previous prime is 111232131139. The next prime is 111232131161. The reversal of 111232131142 is 241131232111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055859 + ... + 1156417.

It is an arithmetic number, because the mean of its divisors is an integer number (5745193920).

Almost surely, 2^111232131142 is an apocalyptic number.

111232131142 is a deficient number, since it is larger than the sum of its proper divisors (72614074298).

111232131142 is a wasteful number, since it uses less digits than its factorization.

111232131142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101076.

The product of its digits is 288, while the sum is 22.

Adding to 111232131142 its reverse (241131232111), we get a palindrome (352363363253).

The spelling of 111232131142 in words is "one hundred eleven billion, two hundred thirty-two million, one hundred thirty-one thousand, one hundred forty-two".