111401312125 has 8 divisors (see below), whose sum is σ = 139028837688. Its totient is φ = 89121049600.

The previous prime is 111401312119. The next prime is 111401312161. The reversal of 111401312125 is 521213104111.

It can be written as a sum of positive squares in 4 ways, for example, as 4239481 + 111397072644 = 2059^2 + 333762^2 .

It is not a de Polignac number, because 111401312125 - 2¹¹ = 111401310077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111401312096 and 111401312105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445605124 + ... + 445605373.

It is an arithmetic number, because the mean of its divisors is an integer number (17378604711).

Almost surely, 2^111401312125 is an apocalyptic number.

It is an amenable number.

111401312125 is a deficient number, since it is larger than the sum of its proper divisors (27627525563).

111401312125 is an frugal number, since it uses more digits than its factorization.

111401312125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891210512 (or 891210502 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 111401312125 its reverse (521213104111), we get a palindrome (632614416236).

The spelling of 111401312125 in words is "one hundred eleven billion, four hundred one million, three hundred twelve thousand, one hundred twenty-five".