222544120400 has 60 divisors (see below), whose sum is σ = 611042578272. Its totient is φ = 76300840320.

The previous prime is 222544120397. The next prime is 222544120453. The reversal of 222544120400 is 4021445222.

It is a self number, because there is not a number n which added to its sum of digits gives 222544120400.

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 11 ways as a sum of consecutive naturals, for example, 39737222 + ... + 39742821.

Almost surely, 2^222544120400 is an apocalyptic number.

222544120400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222544120400 is an abundant number, since it is smaller than the sum of its proper divisors (388498457872).

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

222544120400 is a wasteful number, since it uses less digits than its factorization.

222544120400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79480068 (or 79480057 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 222544120400 its reverse (4021445222), we get a palindrome (226565565622).

The spelling of 222544120400 in words is "two hundred twenty-two billion, five hundred forty-four million, one hundred twenty thousand, four hundred".