222220340400 has 240 divisors, whose sum is σ = 724779280800. Its totient is φ = 58185523200.

The previous prime is 222220340389. The next prime is 222220340471. The reversal of 222220340400 is 4043022222.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47797276 + ... + 47801924.

It is an arithmetic number, because the mean of its divisors is an integer number (3019913670).

Almost surely, 2^222220340400 is an apocalyptic number.

222220340400 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 222220340400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362389640400).

222220340400 is an abundant number, since it is smaller than the sum of its proper divisors (502558940400).

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

222220340400 is a wasteful number, since it uses less digits than its factorization.

222220340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384 (or 5373 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 222220340400 its reverse (4043022222), we get a palindrome (226263362622).

The spelling of 222220340400 in words is "two hundred twenty-two billion, two hundred twenty million, three hundred forty thousand, four hundred".