2225220321400 has 96 divisors (see below), whose sum is σ = 5294613511440. Its totient is φ = 869280168960.

The previous prime is 2225220321397. The next prime is 2225220321407. The reversal of 2225220321400 is 41230225222.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225220321407) by changing a digit.

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, 131373732 + ... + 131390668.

Almost surely, 2^{2225220321400} is an apocalyptic number.

2225220321400 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 2225220321400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2647306755720).

2225220321400 is an abundant number, since it is smaller than the sum of its proper divisors (3069393190040).

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

2225220321400 is a wasteful number, since it uses less digits than its factorization.

2225220321400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32273 (or 32264 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 2225220321400 its reverse (41230225222), we get a palindrome (2266450546622).

The spelling of 2225220321400 in words is "two trillion, two hundred twenty-five billion, two hundred twenty million, three hundred twenty-one thousand, four hundred".