222221000000 has 196 divisors, whose sum is σ = 553633538400. Its totient is φ = 88497600000.

The previous prime is 222220999967. The next prime is 222221000083. The reversal of 222221000000 is 122222.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 358999691 + ... + 359000309.

Almost surely, 2^222221000000 is an apocalyptic number.

222221000000 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 222221000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276816769200).

222221000000 is an abundant number, since it is smaller than the sum of its proper divisors (331412538400).

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

222221000000 is an frugal number, since it uses more digits than its factorization.

222221000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 222221000000 its reverse (122222), we get a palindrome (222221122222).

The spelling of 222221000000 in words is "two hundred twenty-two billion, two hundred twenty-one million", and thus it is an aban number.