1228182163200 has 648 divisors, whose sum is σ = 4659855218928. Its totient is φ = 307551928320.

The previous prime is 1228182163181. The next prime is 1228182163207. The reversal of 1228182163200 is 23612818221.

It is a happy number.

1228182163200 is a `hidden beast` number, since 1 + 2 + 2 + 8 + 18 + 2 + 1 + 632 + 0 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228182163207) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 535621254 + ... + 535623546.

Almost surely, 2^{1228182163200} is an apocalyptic number.

1228182163200 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 1228182163200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2329927609464).

1228182163200 is an abundant number, since it is smaller than the sum of its proper divisors (3431673055728).

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

1228182163200 is a wasteful number, since it uses less digits than its factorization.

1228182163200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 1228182163200 in words is "one trillion, two hundred twenty-eight billion, one hundred eighty-two million, one hundred sixty-three thousand, two hundred".