12355222520115 has 24 divisors (see below), whose sum is σ = 22106548683648. Its totient is φ = 6376889041920.

The previous prime is 12355222520111. The next prime is 12355222520131. The reversal of 12355222520115 is 51102522255321.

12355222520115 is a `hidden beast` number, since 1 + 23 + 552 + 22 + 52 + 0 + 1 + 15 = 666.

It is not a de Polignac number, because 12355222520115 - 2² = 12355222520111 is a prime.

It is a super-2 number, since 2×12355222520115² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12355222520115.

It is not an unprimeable number, because it can be changed into a prime (12355222520111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4428393774 + ... + 4428396563.

It is an arithmetic number, because the mean of its divisors is an integer number (921106195152).

Almost surely, 2^{12355222520115} is an apocalyptic number.

12355222520115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12355222520115 is a deficient number, since it is larger than the sum of its proper divisors (9751326163533).

12355222520115 is a wasteful number, since it uses less digits than its factorization.

12355222520115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856790379 (or 8856790376 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 12355222520115 its reverse (51102522255321), we get a palindrome (63457744775436).

The spelling of 12355222520115 in words is "twelve trillion, three hundred fifty-five billion, two hundred twenty-two million, five hundred twenty thousand, one hundred fifteen".