221212220000222 has 8 divisors (see below), whose sum is σ = 361983632727672. Its totient is φ = 100551009091000.

The previous prime is 221212220000207. The next prime is 221212220000279. The reversal of 221212220000222 is 222000022212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221212220000194 and 221212220000203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027550454529 + ... + 5027550454572.

It is an arithmetic number, because the mean of its divisors is an integer number (45247954090959).

Almost surely, 2^{221212220000222} is an apocalyptic number.

221212220000222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221212220000222 is a deficient number, since it is larger than the sum of its proper divisors (140771412727450).

221212220000222 is a wasteful number, since it uses less digits than its factorization.

221212220000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055100909114.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221212220000222 its reverse (222000022212122), we get a palindrome (443212242212344).

The spelling of 221212220000222 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twenty million, two hundred twenty-two", and thus it is an aban number.