221121000222 has 8 divisors (see below), whose sum is σ = 442242000456. Its totient is φ = 73707000072.

The previous prime is 221121000197. The next prime is 221121000241. The reversal of 221121000222 is 222000121122.

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

221121000222 is an admirable number.

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, 18426750013 + ... + 18426750024.

It is an arithmetic number, because the mean of its divisors is an integer number (55280250057).

Almost surely, 2^221121000222 is an apocalyptic number.

221121000222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221121000222 is a wasteful number, since it uses less digits than its factorization.

221121000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36853500042.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221121000222 its reverse (222000121122), we get a palindrome (443121121344).

The spelling of 221121000222 in words is "two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-two", and thus it is an aban number.