222218921680 has 120 divisors (see below), whose sum is σ = 623180863872. Its totient is φ = 72179313408.

The previous prime is 222218921633. The next prime is 222218921689. The reversal of 222218921680 is 86129812222.

222218921680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222218921689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347452 + ... + 751771.

Almost surely, 2^222218921680 is an apocalyptic number.

222218921680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222218921680 is an abundant number, since it is smaller than the sum of its proper divisors (400961942192).

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

222218921680 is a wasteful number, since it uses less digits than its factorization.

222218921680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099281 (or 1099256 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 222218921680 in words is "two hundred twenty-two billion, two hundred eighteen million, nine hundred twenty-one thousand, six hundred eighty".