222212185000 has 480 divisors, whose sum is σ = 617427360000. Its totient is φ = 74580480000.

The previous prime is 222212184977. The next prime is 222212185001. The reversal of 222212185000 is 581212222.

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

It is not an unprimeable number, because it can be changed into a prime (222212185001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 445314751 + ... + 445315249.

It is an arithmetic number, because the mean of its divisors is an integer number (1286307000).

Almost surely, 2^222212185000 is an apocalyptic number.

222212185000 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 222212185000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308713680000).

222212185000 is an abundant number, since it is smaller than the sum of its proper divisors (395215175000).

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

222212185000 is a wasteful number, since it uses less digits than its factorization.

222212185000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 222212185000 its reverse (581212222), we get a palindrome (222793397222).

The spelling of 222212185000 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred eighty-five thousand".