111138630123 has 8 divisors (see below), whose sum is σ = 148186459600. Its totient is φ = 74091610368.

The previous prime is 111138630121. The next prime is 111138630139. The reversal of 111138630123 is 321036831111.

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

It is not a de Polignac number, because 111138630123 - 2¹ = 111138630121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111138630121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 286623 + ... + 551751.

It is an arithmetic number, because the mean of its divisors is an integer number (18523307450).

Almost surely, 2^111138630123 is an apocalyptic number.

111138630123 is a deficient number, since it is larger than the sum of its proper divisors (37047829477).

111138630123 is a wasteful number, since it uses less digits than its factorization.

111138630123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404861.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 111138630123 in words is "one hundred eleven billion, one hundred thirty-eight million, six hundred thirty thousand, one hundred twenty-three".