12215788200 has 720 divisors, whose sum is σ = 53879364000. Its totient is φ = 2536531200.

The previous prime is 12215788181. The next prime is 12215788219. The reversal of 12215788200 is 288751221.

12215788200 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 578 + 82 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (12215788181) and next prime (12215788219).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 8731101 + ... + 8732499.

It is an arithmetic number, because the mean of its divisors is an integer number (74832450).

Almost surely, 2^12215788200 is an apocalyptic number.

12215788200 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 12215788200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26939682000).

12215788200 is an abundant number, since it is smaller than the sum of its proper divisors (41663575800).

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

12215788200 is a wasteful number, since it uses less digits than its factorization.

12215788200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 12215788200 in words is "twelve billion, two hundred fifteen million, seven hundred eighty-eight thousand, two hundred".