2221545123200 has 384 divisors, whose sum is σ = 6175290381120. Its totient is φ = 783547269120.

The previous prime is 2221545123191. The next prime is 2221545123229. The reversal of 2221545123200 is 23215451222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1183560662 + ... + 1183562538.

Almost surely, 2^{2221545123200} is an apocalyptic number.

2221545123200 is a gapful number since it is divisible by the number (20) 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 2221545123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087645190560).

2221545123200 is an abundant number, since it is smaller than the sum of its proper divisors (3953745257920).

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

2221545123200 is a wasteful number, since it uses less digits than its factorization.

2221545123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174 (or 3157 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 2221545123200 in words is "two trillion, two hundred twenty-one billion, five hundred forty-five million, one hundred twenty-three thousand, two hundred".