12215045430 has 80 divisors (see below), whose sum is σ = 37537045920. Its totient is φ = 2792009088.

The previous prime is 12215045419. The next prime is 12215045441. The reversal of 12215045430 is 3454051221.

12215045430 is a `hidden beast` number, since 1 + 221 + 5 + 0 + 4 + 5 + 430 = 666.

It is an interprime number because it is at equal distance from previous prime (12215045419) and next prime (12215045441).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12215045394 and 12215045403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1071495 + ... + 1082834.

It is an arithmetic number, because the mean of its divisors is an integer number (469213074).

Almost surely, 2^12215045430 is an apocalyptic number.

12215045430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215045430 is an abundant number, since it is smaller than the sum of its proper divisors (25322000490).

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

12215045430 is a wasteful number, since it uses less digits than its factorization.

12215045430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154355 (or 2154346 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12215045430 its reverse (3454051221), we get a palindrome (15669096651).

The spelling of 12215045430 in words is "twelve billion, two hundred fifteen million, forty-five thousand, four hundred thirty".