115120213345 has 4 divisors (see below), whose sum is σ = 138144256020. Its totient is φ = 92096170672.

The previous prime is 115120213337. The next prime is 115120213361. The reversal of 115120213345 is 543312021511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12591532944 + 102528680401 = 112212^2 + 320201^2 .

It is a cyclic number.

It is not a de Polignac number, because 115120213345 - 2³ = 115120213337 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11512021330 + ... + 11512021339.

It is an arithmetic number, because the mean of its divisors is an integer number (34536064005).

Almost surely, 2^115120213345 is an apocalyptic number.

It is an amenable number.

115120213345 is a deficient number, since it is larger than the sum of its proper divisors (23024042675).

115120213345 is an equidigital number, since it uses as much as digits as its factorization.

115120213345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23024042674.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 115120213345 its reverse (543312021511), we get a palindrome (658432234856).

The spelling of 115120213345 in words is "one hundred fifteen billion, one hundred twenty million, two hundred thirteen thousand, three hundred forty-five".