12215165430 has 32 divisors (see below), whose sum is σ = 31571505504. Its totient is φ = 3006809856.

The previous prime is 12215165423. The next prime is 12215165437. The reversal of 12215165430 is 3456151221.

It is an interprime number because it is at equal distance from previous prime (12215165423) and next prime (12215165437).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215165437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15660079 + ... + 15660858.

It is an arithmetic number, because the mean of its divisors is an integer number (986609547).

Almost surely, 2^12215165430 is an apocalyptic number.

12215165430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215165430 is an abundant number, since it is smaller than the sum of its proper divisors (19356340074).

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

12215165430 is a wasteful number, since it uses less digits than its factorization.

12215165430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31320960.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 12215165430 in words is "twelve billion, two hundred fifteen million, one hundred sixty-five thousand, four hundred thirty".