111232123012 has 6 divisors (see below), whose sum is σ = 194656215278. Its totient is φ = 55616061504.

The previous prime is 111232123001. The next prime is 111232123043. The reversal of 111232123012 is 210321232111.

It can be written as a sum of positive squares in only one way, i.e., 63980667136 + 47251455876 = 252944^2 + 217374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13904015373 + ... + 13904015380.

Almost surely, 2^111232123012 is an apocalyptic number.

It is an amenable number.

111232123012 is a deficient number, since it is larger than the sum of its proper divisors (83424092266).

111232123012 is a wasteful number, since it uses less digits than its factorization.

111232123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27808030757 (or 27808030755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111232123012 its reverse (210321232111), we get a palindrome (321553355123).

The spelling of 111232123012 in words is "one hundred eleven billion, two hundred thirty-two million, one hundred twenty-three thousand, twelve".