111402512345 has 4 divisors (see below), whose sum is σ = 133683014820. Its totient is φ = 89122009872.

The previous prime is 111402512341. The next prime is 111402512407. The reversal of 111402512345 is 543215204111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543215204111 = 37 ⋅14681492003.

It can be written as a sum of positive squares in 2 ways, for example, as 57343007296 + 54059505049 = 239464^2 + 232507^2 .

It is a cyclic number.

It is not a de Polignac number, because 111402512345 - 2² = 111402512341 is a prime.

It is a super-3 number, since 3×111402512345³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111402512341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11140251230 + ... + 11140251239.

It is an arithmetic number, because the mean of its divisors is an integer number (33420753705).

Almost surely, 2^111402512345 is an apocalyptic number.

It is an amenable number.

111402512345 is a deficient number, since it is larger than the sum of its proper divisors (22280502475).

111402512345 is an equidigital number, since it uses as much as digits as its factorization.

111402512345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22280502474.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 111402512345 its reverse (543215204111), we get a palindrome (654617716456).

The spelling of 111402512345 in words is "one hundred eleven billion, four hundred two million, five hundred twelve thousand, three hundred forty-five".