12315222124530 has 64 divisors (see below), whose sum is σ = 32606456819328. Its totient is φ = 2957501744640.

The previous prime is 12315222124453. The next prime is 12315222124561. The reversal of 12315222124530 is 3542122251321.

It is a junction number, because it is equal to n+sod(n) for n = 12315222124491 and 12315222124500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385075384 + ... + 385107363.

It is an arithmetic number, because the mean of its divisors is an integer number (509475887802).

Almost surely, 2^{12315222124530} is an apocalyptic number.

12315222124530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12315222124530 is an abundant number, since it is smaller than the sum of its proper divisors (20291234694798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12315222124530 is a wasteful number, since it uses less digits than its factorization.

12315222124530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770182811.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12315222124530 its reverse (3542122251321), we get a palindrome (15857344375851).

The spelling of 12315222124530 in words is "twelve trillion, three hundred fifteen billion, two hundred twenty-two million, one hundred twenty-four thousand, five hundred thirty".