111204243125 has 10 divisors (see below), whose sum is σ = 138960822990. Its totient is φ = 88963394000.

The previous prime is 111204243121. The next prime is 111204243131. The reversal of 111204243125 is 521342402111.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 70717169329 + 40487073796 = 265927^2 + 201214^2 .

It is not a de Polignac number, because 111204243125 - 2² = 111204243121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111204243094 and 111204243103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111204243121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 88962770 + ... + 88964019.

It is an arithmetic number, because the mean of its divisors is an integer number (13896082299).

Almost surely, 2^111204243125 is an apocalyptic number.

It is an amenable number.

111204243125 is a deficient number, since it is larger than the sum of its proper divisors (27756579865).

111204243125 is an frugal number, since it uses more digits than its factorization.

111204243125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177926809 (or 177926794 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 111204243125 its reverse (521342402111), we get a palindrome (632546645236).

The spelling of 111204243125 in words is "one hundred eleven billion, two hundred four million, two hundred forty-three thousand, one hundred twenty-five".