2221421455200 has 144 divisors (see below), whose sum is σ = 7262582040000. Its totient is φ = 589769310720.

The previous prime is 2221421455199. The next prime is 2221421455241. The reversal of 2221421455200 is 25541241222.

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

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 23 ways as a sum of consecutive naturals, for example, 1493950 + ... + 2583549.

It is an arithmetic number, because the mean of its divisors is an integer number (50434597500).

Almost surely, 2^{2221421455200} is an apocalyptic number.

2221421455200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221421455200 is an abundant number, since it is smaller than the sum of its proper divisors (5041160584800).

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

2221421455200 is a wasteful number, since it uses less digits than its factorization.

2221421455200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077749 (or 4077736 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 2221421455200 its reverse (25541241222), we get a palindrome (2246962696422).

The spelling of 2221421455200 in words is "two trillion, two hundred twenty-one billion, four hundred twenty-one million, four hundred fifty-five thousand, two hundred".