12215733120 has 320 divisors, whose sum is σ = 44351223840. Its totient is φ = 3203297280.

The previous prime is 12215733097. The next prime is 12215733161. The reversal of 12215733120 is 2133751221.

It is a tau number, because it is divible by the number of its divisors (320).

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

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, 3160309 + ... + 3164171.

Almost surely, 2^12215733120 is an apocalyptic number.

12215733120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12215733120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22175611920).

12215733120 is an abundant number, since it is smaller than the sum of its proper divisors (32135490720).

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

12215733120 is an equidigital number, since it uses as much as digits as its factorization.

12215733120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 12215733120 in words is "twelve billion, two hundred fifteen million, seven hundred thirty-three thousand, one hundred twenty".